Broadcasting over uncertain channels with decoding delay constraints

Philip A. Whiting; Edmund M. Yeh

doi:10.1109/TIT.2005.864437

Broadcasting over uncertain channels with decoding delay constraints

Philip A. Whiting^*, Edmund M. Yeh

^*Corresponding author for this work

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

14 Citations (Scopus)

Abstract

We examine communication over slowly varying flat-fading additive white Gaussian noise (AWGN) channels with delayed channel state information (CSI) feedback to the transmitter and finite decoding delay constraints. Under a block-fading channel model, it is shown that a broadcast strategy maximizes the expected reliably received rate when the decoding delay constraint is one block and in certain cases when the delay constraint is two blocks. The latter requires a new analysis of underlying parallel Gaussian broadcast channels (GBCs) which are not degraded in the same direction.

Original language	English
Pages (from-to)	904-921
Number of pages	18
Journal	IEEE Transactions on Information Theory
Volume	52
Issue number	3
DOIs	https://doi.org/10.1109/TIT.2005.864437
Publication status	Published - Mar 2006
Externally published	Yes

Keywords

Broadcast channel
Capacity versus outage
Composite channels
Decoding delay
Delay-limited capacity
Delayed channel feedback
Expected capacity
Fading channels
Nonergodic capacity
Superposition coding

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10.1109/TIT.2005.864437

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AB - We examine communication over slowly varying flat-fading additive white Gaussian noise (AWGN) channels with delayed channel state information (CSI) feedback to the transmitter and finite decoding delay constraints. Under a block-fading channel model, it is shown that a broadcast strategy maximizes the expected reliably received rate when the decoding delay constraint is one block and in certain cases when the delay constraint is two blocks. The latter requires a new analysis of underlying parallel Gaussian broadcast channels (GBCs) which are not degraded in the same direction.

KW - Broadcast channel

KW - Capacity versus outage

KW - Composite channels

KW - Decoding delay

KW - Delay-limited capacity

KW - Delayed channel feedback

KW - Expected capacity

KW - Fading channels

KW - Nonergodic capacity

KW - Superposition coding

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SP - 904

EP - 921

JO - IEEE Transactions on Information Theory

JF - IEEE Transactions on Information Theory

IS - 3

ER -

Broadcasting over uncertain channels with decoding delay constraints

Abstract

Keywords

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