On the capacity of the vector MAC with feedback

Syed Jafar; Andrea Goldsmith

doi:10.1109/TIT.2006.876230

On the capacity of the vector MAC with feedback

Syed Jafar, Andrea Goldsmith

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

6 Scopus citations

Abstract

In this correspondence, we determine the feedback capacity region of a two user Gaussian multiple-access channel (MAC) with multiple antennas at the base station and a single antenna at each user. The vector MAC with a single antenna at the base station and multiple antennas at each user is shown to be equivalent to a scalar MAC. We also determine the capacity enhancement due to feedback at high signal-to-noise ratio (SNR) for the scalar and vector MAC for any number of users. Extensions of the high SNR results to the vector broadcast channel are also provided.

Original language	English (US)
Pages (from-to)	3259-3264
Number of pages	6
Journal	IEEE Transactions on Information Theory
Volume	52
Issue number	7
DOIs	https://doi.org/10.1109/TIT.2006.876230
State	Published - Jul 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Information Systems
Computer Science Applications
Library and Information Sciences

Keywords

Broadcast
Capacity
Feedback
Multiple access
Multiple antennas

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10.1109/TIT.2006.876230

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abstract = "In this correspondence, we determine the feedback capacity region of a two user Gaussian multiple-access channel (MAC) with multiple antennas at the base station and a single antenna at each user. The vector MAC with a single antenna at the base station and multiple antennas at each user is shown to be equivalent to a scalar MAC. We also determine the capacity enhancement due to feedback at high signal-to-noise ratio (SNR) for the scalar and vector MAC for any number of users. Extensions of the high SNR results to the vector broadcast channel are also provided.",

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AU - Jafar, Syed

AU - Goldsmith, Andrea

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AB - In this correspondence, we determine the feedback capacity region of a two user Gaussian multiple-access channel (MAC) with multiple antennas at the base station and a single antenna at each user. The vector MAC with a single antenna at the base station and multiple antennas at each user is shown to be equivalent to a scalar MAC. We also determine the capacity enhancement due to feedback at high signal-to-noise ratio (SNR) for the scalar and vector MAC for any number of users. Extensions of the high SNR results to the vector broadcast channel are also provided.

KW - Broadcast

KW - Capacity

KW - Feedback

KW - Multiple access

KW - Multiple antennas

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JO - IEEE Transactions on Information Theory

JF - IEEE Transactions on Information Theory

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ER -

On the capacity of the vector MAC with feedback

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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