Two-User MIMO Broadcast Channel with Transmit Correlation Diversity: Achievable Rate Regions
Paper i proceeding, 2021

In a multiple-input multiple-output (MIMO) broad-cast channel (BC), the difference in spatial transmit correlation matrices of different users is called transmit correlation diversity. Recently, several works have extended this concept beyond its original scope, to include channels whose transmit correlation matrices have non-overlapping eigenspaces. In contrast to earlier analyses of overlapping eigenspaces that were mostly described in terms of degrees-of-freedom, this work presents achievable rate regions. These achievable regions are derived by rate-splitting, product superposition, or a combination thereof. Our rate expressions make explicit the contribution of the common parts and individual (non-overlapping) parts of the correlation eigenspaces toward the achievable rate region. As a by-product, a result of Hassibi and Hochwald on MIMO channel training is extended to channels with spatial correlation.

MIMO communication


Khac-Hoang Ngo

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk, Kommunikationssystem

Fan Zhang

University of Texas at Dallas

Sheng Yang


Aria Nosratinia

University of Texas at Dallas

2021 IEEE Information Theory Workshop, ITW 2021 - Proceedings

9781665403122 (ISBN)

2021 IEEE Information Theory Workshop, ITW 2021
Virtual, Online, Japan,






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