Chong Kwan Un

According to our database, Chong Kwan Un authored at least 131 papers between 1974 and 1998.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

1998

Deleted strategy for MMI-based HMM training.

Nam Soo Kim, Chong Kwan Un

IEEE Trans. Speech Audio Process., 1998

Speech recognition in noisy environments using first-order vector Taylor series.

Do Yeong Kim, Chong Kwan Un, Nam Soo Kim

Speech Commun., 1998

Performance Analysis of an Input Queueing ATM Switch with Two Priority Classes.

Jang Wong Lee, Jin Seek Choi, Chong Kwan Un

Perform. Evaluation, 1998

1997

Optimum block adaptive filtering algorithms using the preconditioning technique.

Jaesung Lim, Chong Kwan Un

IEEE Trans. Signal Process., 1997

Statistically reliable deleted interpolation.

Nam Soo Kim, Chong Kwan Un

IEEE Trans. Speech Audio Process., 1997

Frame-correlated hidden Markov model based on extended logarithmic pool.

Nam Soo Kim, Chong Kwan Un

IEEE Trans. Speech Audio Process., 1997

Performance Analysis of Input Queue with Combination of Push-Out and State-Dependent Scheduling Schemes for Nonblocking ATM Switches.

Kye Sang Lee, Chong Kwan Un, Jae Yong Lee

Perform. Evaluation, 1997

Performance Comparison of Nonpreemptive and Preemptive Priority Queueing Strategies in ATM Packet Switch with Input Buffers.

Jin Seek Choi, Kye Sang Lee, Chong Kwan Un

Perform. Evaluation, 1997

Performance Analysis of Two Fanout Splitting Schemes for a Multicast Packet Switch With Capacity M.

Y. L. Jae, Chong Kwan Un

Perform. Evaluation, 1997

Model-based approach for robust speech recognition in noisy environements with multiple noise sources.

Do Yeong Kim, Nam Soo Kim, Chong Kwan Un

Proceedings of the Fifth European Conference on Speech Communication and Technology, 1997

Low-rate CELP speech coding using an improved weighting function.

Chul Hong Kwon, Chong Kwan Un

Proceedings of the 1997 IEEE International Conference on Acoustics, 1997

1996

Performance of a burst admission control scheme based on prediction of cell losses.

S. W. Min, C. K. Un

Telecommun. Syst., 1996

Performance study of an input and output queueing ATM switch with a window scheme and a speed constraint.

Jin Seek Choi, Chong Kwan Un

Telecommun. Syst., 1996

Modeling acoustic transitions in speech by modified hidden Markov models with state duration and state duration-dependent observation probabilities.

Y. K. Park, C. K. Un, O. W. Kwon

IEEE Trans. Speech Audio Process., 1996

On the generation and use of a parallel-branch subunit model in continuous HMM.

Y. K. Park, C. K. Un

IEEE Trans. Speech Audio Process., 1996

Word recognition by a parallel-branch subunit model based on misrecognized data in semi-continuous HMM.

Y. K. Park, C. K. Un

IEEE Signal Process. Lett., 1996

Discriminative weighting of HMM state-likelihoods using the GPD method.

O. W. Kwon, C. K. Un

IEEE Signal Process. Lett., 1996

An MLP/HMM hybrid model using nonlinear predictors.

Yong-Joo Chung, Chong Kwan Un

Speech Commun., 1996

Performance of HMM-based speech recognizers with discriminative state-weights.

O. W. Kwon, C. K. Un

Speech Commun., 1996

A new parameter smoothing method in the hybrid TDNN/HMM architecture for speech recognition.

C. S. Jang, C. K. Un

Speech Commun., 1996

Multilayer perceptrons for state-dependent weightings of HMM likelihoods.

Yong-Joo Chung, Chong Kwan Un

Speech Commun., 1996

Block conjugate gradient algorithms for adaptive filtering.

Jaesung Lim, Chong Kwan Un

Signal Process., 1996

An optimum block adaptive shifting algorithm using the Toeplitz preconditioner.

J. S. Lim, K. K. Lee, C. K. Un

Signal Process., 1996

Performance Analysis of Cut-Through Buffered Banyan Networks with Finite Buffer Size.

S. Y. Young, Chong Kwan Un

Perform. Evaluation, 1996

Performance of Contention Processing Schemes for WDM Networks with Control Channels.

Doo Seok Kim, Chong Kwan Un

Perform. Evaluation, 1996

Performance of dilated banyan network with back-pressure mechanism.

Young Sik Youn, Chong Kwan Un

Comput. Commun., 1996

Cell loss analysis of an ATM multiplexer with loss priority control for VBR bursty traffic.

Sang Won Min, Hae Chung, Chong Kwan Un

Comput. Commun., 1996

UPC/NPC algorithm for guaranteed QoS in ATM networks.

Y. J. Kim, S. C. Chang, C. K. Un, Byung-Choel Shin

Comput. Commun., 1996

1995

Performance analysis of bandwidth allocation strategy with state-dependent Bernoulli access and preemptive priority in wideband integrated networks.

Do Kyu Kim, Chong Kwan Un

Telecommun. Syst., 1995

Banyan multipath self-routing ATM switches with shared buffer type switch elements.

Youn Chan Jung, Chong Kwan Un

IEEE Trans. Commun., 1995

Contention-based reservation protocols in multiwavelength optical networks with a passive star topology.

Hong Beom Jeon, Chong Kwan Un

IEEE Trans. Commun., 1995

On estimating robust probability distribution in HMM-based speech recognition.

Nam Soo Kim, Chong Kwan Un

IEEE Trans. Speech Audio Process., 1995

Improving the adaptive source model for CELP coding with long analysis frame size.

Chul Hong Kwon, Chong Kwan Un

Speech Commun., 1995

An optimum block adaptive algorithm based on the nested iteration technique.

Jaesung Lim, Chul Heum Yon, Chong Kwan Un

Signal Process., 1995

Asynchronous reservation protocol for variable-sized messages in a WDM-based local network.

Jae Hwoon Lee, Chong Kwan Un

Comput. Commun., 1995

1994

Capacity of wireless dynamic TDMA and media access control for packetized voice/data integration.

Byung-Chul Kim, Chong Kwan Un

Wirel. Pers. Commun., 1994

Robust adaptive beamforming based on the eigenstructure method.

Won Sik Youn, Chong Kwan Un

IEEE Trans. Signal Process., 1994

Unslotted 1- and p_i-persistent CSMA-CD protocols for fiber optic bus networks.

Chong Ho Yoon, Chong Kwan Un

IEEE Trans. Commun., 1994

Performance analysis of broadcast star network with priorities.

Sea Hyeon Nam, Chong Kwan Un

IEEE Trans. Commun., 1994

Performance analysis of statistical multiplexing for heterogeneous bursty traffic in an ATM network.

Young Han Kim, Chong Kwan Un

IEEE Trans. Commun., 1994

Analysis of a finite-buffer polling system with exhaustive service based on virtual buffering.

Woo Young Jung, Chong Kwan Un

IEEE Trans. Commun., 1994

Performance analysis of ARQ error controls under Markovian block error pattern.

Young-Jong Cho, Chong Kwan Un

IEEE Trans. Commun., 1994

Modeling and analysis of a tandem link connection under the burst-error condition.

Young-Jong Cho, Chong Kwan Un

IEEE Trans. Commun., 1994

A fast transversal filtering algorithm for pole-zero modeling.

B. J. Min, C. K. Un

Signal Process., 1994

Performance Analysis of Markovian Polling Systems with Single Buffers.

Hae Chung, Chong Kwan Un, Woo Young Jung

Perform. Evaluation, 1994

A Korean Large Vocabulary Speech Recognition System for Automatic Telephone Number Query Service.

Jun Mo Koo, Hyung Soon Kim, Chong Kwan Un

Int. J. Pattern Recognit. Artif. Intell., 1994

Analysis of delay bounds of a tree protocol with collision detection.

W. S. Chung, C. K. Un, Byung-Choel Shin

Comput. Commun., 1994

Performance Analysis of Packet Switches with Input and Output Buffers.

Chan Jung Youn, Chong Kwan Un

Comput. Networks ISDN Syst., 1994

Performance Analysis of Reconstruction Algorithms for Packet Voice Communications.

Young-Jong Cho, Chong Kwan Un

Comput. Networks ISDN Syst., 1994

1993

A linearly constrained beamforming robust to array imperfections.

Won Sik Youn, Chong Kwan Un

IEEE Trans. Signal Process., 1993

A Sequential Estimation Approach for Performance Improvement of Eigenstructure-Based Methods in Array Processing.

Seong Keun Oh, Chong Kwan Un

IEEE Trans. Signal Process., 1993

A robust adaptive array based on signal subspace approach.

J. W. Kim, C. K. Un

IEEE Trans. Signal Process., 1993

Design and performance analysis of an asynchronous non-blocking switch with window policy.

Goo Yeon Lee, Chong Kwan Un

Telecommun. Syst., 1993

Performance of the prioritized random token protocol for high-speed and ratio networks.

Dong Soo Park, Chong Kwan Un

IEEE Trans. Commun., 1993

Analysis of bandwidth allocation strategies with access restrictions in broadband ISDN.

Young Han Kim, Chong Kwan Un

IEEE Trans. Commun., 1993

Analysis of the M/G/1 queue under a combined preemptive/nonpreemptive priority discipline.

You Ze Cho, Chong Kwan Un

IEEE Trans. Commun., 1993

Pole-zero modeling of speech using fast transversal filtering algorithm.

B. J. Min, C. K. Un

Speech Commun., 1993

Fast adaptive beamforming robust to array imperfections.

Won Sik Youn, Chong Kwan Un

Signal Process., 1993

Performance of Personal Portable Radio Telephone Systems with and without Guard Channels.

Chong Ho Yoon, Chong Kwan Un

IEEE J. Sel. Areas Commun., 1993

Probabilistic reservation protocol for high-speed unidirectional bus networks.

Hong-Bum Jeon, Byung-Choel Shin, C. K. Un

Comput. Commun., 1993

1992

Simple computational methods of the AP algorithm for maximum likelihood localization of multiple radiating sources.

Seong Keun Oh, Chong Kwan Un

IEEE Trans. Signal Process., 1992

An adaptive array robust to beam pointing error.

J. W. Kim, C. K. Un

IEEE Trans. Signal Process., 1992

Throughput analysis for two ARQ schemes using combined transition matrix.

S. R. Kim, C. K. Un

IEEE Trans. Commun., 1992

Analysis of throughput and delay of a high-speed slotted ring based on lumped modeling.

W. Y. Jung, C. K. Un

IEEE Trans. Commun., 1992

A recognition time reduction algorithm for large-vocabulary speech recognition.

Jun Mo Koo, Chong Kwan Un

Speech Commun., 1992

Performance of constant modulus adaptive digital filters for interference cancellation.

O. W. Kwon, C. K. Un, J. C. Lee

Signal Process., 1992

Analysis of voice/data multiplexers with ARQ scheme, based on a Markov renewal process modelling.

C. K. Jeong, C. K. Un

Comput. Commun., 1992

Performance Analysis of Broadcast Star Network with Collision-Avoidance Switch.

Sea Hyeon Nam, Chong Kwan Un

Comput. Networks ISDN Syst., 1992

Performance Analysis of Leaky-Bucket Bandwidth Enforcement Strategy for Bursty Traffics in an ATM Network.

Young Han Kim, Byung Chul Shin, Chong Kwan Un

Comput. Networks ISDN Syst., 1992

A speaker adaptation based on corrective training and learning vector quantization.

Myoung-Wan Koo, Chong Kwan Un

Proceedings of the Second International Conference on Spoken Language Processing, 1992

Performance Analysis of a Multichannel Local Lightwave Network with Grouping Property.

Sea Hyeon Nam, Chong Kwan Un

Proceedings of the Proceedings IEEE INFOCOM '92, 1992

An improved VQ codebook design algorithm for HMM.

Jun Mo Koo, Hwang Soo Lee, C. K. Un

Proceedings of the 1992 IEEE International Conference on Acoustics, 1992

1991

Window flow control with error-checking scheme in quasi-cut-through switching network with noisy channels.

Young-Jong Cho, Chong Kwan Un

IEEE Trans. Commun., 1991

Dual RLS lattice joint process estimation algorithm for a time-varying ARMA speech model.

B. K. Lim, C. K. Un

Speech Commun., 1991

Recursive modified Gram-Schmidt algorithm for linear phase filtering.

J. S. Sunwoo, C. K. Un

Signal Process., 1991

Parallel modified spatial smoothing algorithm for coherent interference cancellation.

Sun Park, Chong Kwan Un

Signal Process., 1991

Fast initialization procedure of the alternating projection algorithm for maximum likelihood localization of multiple sources.

Seong Keun Oh, Chong Kwan Un

Signal Process., 1991

Performance Analysis of an Integrated Voice / Data Cut-Through Switching Network.

Y. S. Youn, Chong Kwan Un

Comput. Networks ISDN Syst., 1991

Unslotted CSMA-CD Protocols with Combined Retransmission Strategy for Fiber Optic Bus and Ring Networks.

Chong Ho Yoon, Chong Kwan Un

Comput. Networks ISDN Syst., 1991

1990

On reducing computational complexity of codebook search in CELP coding.

J. I. Lee, C. K. Un

IEEE Trans. Commun., 1990

Performance analysis of a packet-switched synchronous voice/data transmission system.

Jun Kyun Choi, Jung Uck Seo, Chong Kwan Un

IEEE Trans. Commun., 1990

Delay Analysis of the ISDN D-Channel Access Protocol.

Goo Yeon Lee, Chong Kwan Un

Comput. Networks ISDN Syst., 1990

A low rate VQ speech coding algorithm with variable transmission frame length.

Sung Ro Lee, Hwang Soo Lee, Chong Kwan Un

Proceedings of the First International Conference on Spoken Language Processing, 1990

A recognition time reduction algorithm for large-vocabulary speech recognition.

Jun Mo Koo, Chong Kwan Un, Hwang Soo Lee, H. R. Kim, Myoung-Wan Koo

Proceedings of the First International Conference on Spoken Language Processing, 1990

A comparative study of speaker adaptation methods for HMM-based speech recognition.

Myoung-Wan Koo, Chong Kwan Un, Hwang Soo Lee, Jun Mo Koo, H. R. Kim

Proceedings of the First International Conference on Spoken Language Processing, 1990

Speech recognition method based on the dual processing nature of speech perception.

Hyung Soon Kim, Chong Kwan Un

Proceedings of the First International Conference on Spoken Language Processing, 1990

Generalized training of hidden Markov model parameters for speech recognition.

Nam Soo Kim, Chong Kwan Un

Proceedings of the First International Conference on Spoken Language Processing, 1990

An efficient viterbi scoring architecture for HMM-based isolated word recognition systems.

Jin Yul Kim, Yun-Seok Cho, Soon Young Yoon, Hwang Soo Lee, Chong Kwan Un

Proceedings of the First International Conference on Spoken Language Processing, 1990

1989

Performance of a class of adaptive data-driven echo cancellers.

Gi Hong Im, Chong Kwan Un, Jae Chon Lee

IEEE Trans. Commun., 1989

On acknowledgement schemes of sliding window flow control.

Jun-Kyun Choi, Chong Kwan Un

IEEE Trans. Commun., 1989

1988

Fast sequential least squares design of FIR filters with linear phase.

J. S. Sunwoo, C. K. Un

Proc. IEEE, 1988

On the convergence speed of nonlinear least-squares IIR adaptive filter.

H. J. Kim, C. K. Un

Proc. IEEE, 1988

Performance analysis of a voice/data multiplexer based on Markov renewal process modelling.

C. K. Jeong, C. K. Un

Proc. IEEE, 1988

An efficient multiplexing technique for packet-switched voice/data networks.

Jun Kyun Choi, C. K. Un

Proc. IEEE, 1988

1987

A reduced structure of the passband fractionally spaced equalizer.

Gi Hong Im, C. K. Un

Proc. IEEE, 1987

On improving the performance of a digital tanlock loop.

W. D. Cho, C. K. Un

Proc. IEEE, 1987

1986

Performance Analysis of a Quasi-M/D/1 Cut-Through Switching Network with Noisy Channels.

Byung Chul Shin, Chong Kwan Un

IEEE Trans. Commun., 1986

On reducing computational complexity in connected digit recognition by the frame labeling method.

H. J. Cho, C. K. Un

Proc. IEEE, 1986

Voice Transmission Through the Code Division Multiple Access Local Area Network.

Jong Rak Lee, Chong Kwan Un

Proceedings of the IEEE International Conference on Communications: Integrating the World Through Communications, 1986

Variable-rate ADM with Efficient Residual Coding for Packet Voice Transmission.

Dong-Ho Cho, Chong Kwan Un

Proceedings of the IEEE International Conference on Communications: Integrating the World Through Communications, 1986

Isolated word recognition based on finite-state vector quantization.

Won Sik Youn, C. K. Un

Proceedings of the IEEE International Conference on Acoustics, 1986

Enhancement of noisy speech by forward/Backward adaptive digital filtering.

J. W. Kim, C. K. Un

Proceedings of the IEEE International Conference on Acoustics, 1986

1985

Performance Analysis of PCM/ADPCM Transcoding Systems.

Jin-Ick Lee, Chong Kwan Un

IEEE Trans. Commun., 1985

Performance Analysis of Statistical Voice/Data Multiplexing Systems with Voice Storage.

Hyeong Lee, Chong Kwan Un

IEEE Trans. Commun., 1985

On the Performance of Speech Waveform Coders with Noise Spectral Shaping.

Hwang Soo Lee, Chong Kwan Un

IEEE Trans. Commun., 1985

On Improving the Performance of an FIR ADM Digital Filter.

Y. C. Kye, H. J. Cho, Chong Kwan Un

IEEE Trans. Commun., 1985

The N-Phase Digital Tanlock Loop for Tracking Suppressed-Carrier N-ary PSK Signals.

Hwa Kim, Chong Kwan Un, Jae Chon Lee

IEEE Trans. Commun., 1985

A simple method for MSK modulation and demodulation.

S. M. Ryu, C. K. Un

Proc. IEEE, 1985

A frequency-weighted block LMS algorithm and its application to speech processing.

J. C. Lee, C. K. Un, Dong-Ho Cho

Proc. IEEE, 1985

Adaptive digital filtering of differentially coded signals.

J. W. Lee, C. K. Un, J. C. Lee

Proceedings of the IEEE International Conference on Acoustics, 1985

1984

Two-Dimensional FIR ADM Digital Filters.

Gi Hong Im, Chong Kwan Un

IEEE Trans. Commun., 1984

A 9600 Bit/s RELP Vocoder With Split-Band Coding.

Chong Kwan Un, Jong Rak Lee

Proceedings of the IEEE International Conference on Communications: Links for the Future, 1984

A performance comparison of pitch extraction algorithms for noisy speech.

Kyong-Ae Oh, Chong Kwan Un

Proceedings of the IEEE International Conference on Acoustics, 1984

On the convergence behaviour of frequency-domain LMS adaptive digital filters.

Jae Chon Lee, Chong Kwan Un

Proceedings of the IEEE International Conference on Acoustics, 1984

1983

Performance Analysis of FIR ADM Digital Filters.

J. S. Sunwoo, C. K. Un

IEEE Trans. Commun., 1983

Implementation of a Two-Channel LPC Vocoder.

Byoung Cheol Shin, Hyeong-Ho Lee, Chong Kwan Un, Sang Zee Lee, Kil Ho Song

IEEE Trans. Commun., 1983

Implementation of a Multirate Speech Digitizer.

Byung Suk Lee, Chong Kwan Un, Hyeong-Ho Lee, Byoung Cheol Shin, Hwang Soo Lee

IEEE Trans. Commun., 1983

1982

Hybrid Companding Delta Modulation with Variable-Rate Sampling.

Chong Kwan Un, Dong-Ho Cho

IEEE Trans. Commun., 1982

Performance Analysis of Digital Tanlock Loop.

Jae Chon Lee, Chong Kwan Un

IEEE Trans. Commun., 1982

On spectral flattening techniques in residual-excited linear prediction vocoding.

Chong Kwan Un, Jong Rak Lee

Proceedings of the IEEE International Conference on Acoustics, 1982

Pole-zero modeling of noisy speech and its application to vocoding.

Kil Ho Song, Chong Kwan Un

Proceedings of the IEEE International Conference on Acoustics, 1982

1981

Hybrid Companding Delta Modulation.

Chong Kwan Un, Hwang Soo Lee, Joo Seok Song

IEEE Trans. Commun., 1981

A Performance Study of Delta Modulation Systems for Voiceband Data Signals.

Yong-Hwan Lee, Chong Kwan Un

IEEE Trans. Commun., 1981

Improving LPC analysis of noisy speech by autocorrelation subtraction method.

Chong Kwan Un, K. Y. Choi

Proceedings of the IEEE International Conference on Acoustics, 1981

1980

A Study of the Comparative Performance of Adaptive Delta Modulation Systems.

Chong Kwan Un, Hwang Soo Lee

IEEE Trans. Commun., 1980

Quantization Noise in Adaptive Delta Modulation Systems.

Hwang Soo Lee, Chong Kwan Un

IEEE Trans. Commun., 1980

A 4800 bps LPC vocoder with improved excitation.

Chong Kwan Un, Wonyong Sung

Proceedings of the IEEE International Conference on Acoustics, 1980

On pole-zero modeling of speech.

Kil Ho Song, Chong Kwan Un

Proceedings of the IEEE International Conference on Acoustics, 1980

1978

A Low-Rate Digital Formant Vocoder.

Chong Kwan Un

IEEE Trans. Commun., 1978

1975

The Residual-Excited Linear Prediction Vocoder with Transmission Rate Below 9.6 kbits/s.

Chong Kwan Un, D. Thomas Magill

IEEE Trans. Commun., 1975

1974

Transient Mean and Variance of Phase Error of the First-Order Phase-Locked Loop.

C. K. Un

IEEE Trans. Commun., 1974