DocumentCode
2939184
Title
On the factor-of-two bound for Gaussian multiple access channels with feedback
Author
Ordentlich, Erik
Author_Institution
Inf. Syst. Lab., Stanford Univ., CA, USA
fYear
1995
fDate
17-22 Sep 1995
Firstpage
443
Abstract
Pombra and Cover (see IEEE Trans. Inform. Theory, vol.40, p.885-92, May 1994) and Thomas (see IEEE Trans. Inform. Theory, vol.33, p.711-16, Sept. 1987) showed that the maximum achievable throughput (sum of rates of all users) of a Gaussian multiple access channel with feedback is at most twice that achievable without feedback. We prove a stronger result which establishes the factor-of-two bound not only for the total throughput but for the entire capacity region as well. Specifically, we show that the capacity region of a Gaussian multiple access channel with feedback is contained within twice the capacity region without feedback
Keywords
Gaussian channels; channel capacity; multi-access systems; Gaussian multiple access channel; capacity region; factor-of-two bound; feedback; maximum achievable throughput; Channel capacity; Covariance matrix; Feedback; Gaussian channels; Roentgenium;
fLanguage
English
Publisher
ieee
Conference_Titel
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Conference_Location
Whistler, BC
Print_ISBN
0-7803-2453-6
Type
conf
DOI
10.1109/ISIT.1995.550430
Filename
550430
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