Variable-rate adaptive Trellis coded QAM for flat-fading channels

Vincent K.N. Lau; Malcolm D. Macleod

doi:10.1109/26.950342

Variable-rate adaptive Trellis coded QAM for flat-fading channels

Vincent K.N. Lau^*, Malcolm D. Macleod

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

44 Citations (Scopus)

Abstract

A bandwidth-efficient variable-rate adaptive channel coding scheme, ATCQAM, for time-varying flat-fading channels is proposed. In addition to the forward channel, a low-capacity feedback channel is needed to convey channel state information to the transmitter, possibly with delays and noise. A number of transmission modes, with varying throughputs, are incorporated at the transmitter. Appropriate transmission modes are selected based on the feedback channel states. Design issues for the ATCQAM are considered. A closed-loop control scheme to maintain mode synchronization between the transmitter and the receiver is discussed. The effects of feedback delay, a noisy feedback channel, and mobile speed are investigated. Analytical bounds are derived and simulations are performed to verify the results.

Original language	English
Pages (from-to)	1550-1560
Number of pages	11
Journal	IEEE Transactions on Communications
Volume	49
Issue number	9
DOIs	https://doi.org/10.1109/26.950342
Publication status	Published - Sept 2001
Externally published	Yes

Keywords

Adaptive coded QAM
Variable-rate adaptive channel coding

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10.1109/26.950342

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title = "Variable-rate adaptive Trellis coded QAM for flat-fading channels",

abstract = "A bandwidth-efficient variable-rate adaptive channel coding scheme, ATCQAM, for time-varying flat-fading channels is proposed. In addition to the forward channel, a low-capacity feedback channel is needed to convey channel state information to the transmitter, possibly with delays and noise. A number of transmission modes, with varying throughputs, are incorporated at the transmitter. Appropriate transmission modes are selected based on the feedback channel states. Design issues for the ATCQAM are considered. A closed-loop control scheme to maintain mode synchronization between the transmitter and the receiver is discussed. The effects of feedback delay, a noisy feedback channel, and mobile speed are investigated. Analytical bounds are derived and simulations are performed to verify the results.",

keywords = "Adaptive coded QAM, Variable-rate adaptive channel coding",

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year = "2001",

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AU - Lau, Vincent K.N.

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N2 - A bandwidth-efficient variable-rate adaptive channel coding scheme, ATCQAM, for time-varying flat-fading channels is proposed. In addition to the forward channel, a low-capacity feedback channel is needed to convey channel state information to the transmitter, possibly with delays and noise. A number of transmission modes, with varying throughputs, are incorporated at the transmitter. Appropriate transmission modes are selected based on the feedback channel states. Design issues for the ATCQAM are considered. A closed-loop control scheme to maintain mode synchronization between the transmitter and the receiver is discussed. The effects of feedback delay, a noisy feedback channel, and mobile speed are investigated. Analytical bounds are derived and simulations are performed to verify the results.

AB - A bandwidth-efficient variable-rate adaptive channel coding scheme, ATCQAM, for time-varying flat-fading channels is proposed. In addition to the forward channel, a low-capacity feedback channel is needed to convey channel state information to the transmitter, possibly with delays and noise. A number of transmission modes, with varying throughputs, are incorporated at the transmitter. Appropriate transmission modes are selected based on the feedback channel states. Design issues for the ATCQAM are considered. A closed-loop control scheme to maintain mode synchronization between the transmitter and the receiver is discussed. The effects of feedback delay, a noisy feedback channel, and mobile speed are investigated. Analytical bounds are derived and simulations are performed to verify the results.

KW - Adaptive coded QAM

KW - Variable-rate adaptive channel coding

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DO - 10.1109/26.950342

M3 - Journal Article

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EP - 1560

JO - IEEE Transactions on Communications

JF - IEEE Transactions on Communications

IS - 9

ER -

Variable-rate adaptive Trellis coded QAM for flat-fading channels

Abstract

Keywords

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