Title

Optimal Rate Allocation for Distributed Source Coding over Gaussian Multiple Access Channels

Authors

Authors

T. Q. Wang; A. Seyedi; A. Vosoughi;W. Heinzelman

Comments

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Abbreviated Journal Title

IEEE Trans. Wirel. Commun.

Keywords

Distributed source coding; Slepian-Wolf source coding; Gaussian multiple; access channel; optimal rate allocation; CDMA; Orthogonal CDMA; superposition coding; successive interference cancelation; FDMA; TDMA; WIRELESS SENSOR NETWORKS; CORRELATED SOURCES; ENERGY-EFFICIENT; TRANSMISSION; INFORMATION; Engineering, Electrical & Electronic; Telecommunications

Abstract

We study the problem of joint optimization of Slepian-Wolf (SW) source coding and transmission rates over a Gaussian multiple access channel with the considerations of circuit power consumption and average transmit power constraint. The goal is to maximize the sample rate at the source nodes. We first derive a criterion to determine the optimality of different multiple access schemes such that the highest sample rate can be achieved at the source nodes when SW coding is used. Based on the derived optimality criterion, we propose a rate allocation procedure to determine the jointly optimal SW coding and transmission rates corresponding to orthogonal code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA) and superposition coding with successive interference cancellation (SCSIC) schemes. Several demonstrative numerical examples are provided to show the performance gain of the proposed joint rate allocation scheme.

Journal Title

Ieee Transactions on Wireless Communications

Volume

12

Issue/Number

5

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

2002

Last Page

2013

WOS Identifier

WOS:000321199800004

ISSN

1536-1276

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