Low SNR capacity for MIMO Rician and Rayleigh-product fading channels with single co-channel interferer and noise

Caijun Zhong, Shi Jin, Kaikit Wong, Mohamed-Slim Alouini, Tharm Ratnarajah

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

This paper studies the ergodic capacity of multiple-input multiple-output (MIMO) systems with a single co-channel interferer in the low signal-to-noise-ratio (SNR) regime. Two MIMO models namely Rician and Rayleigh-product channels are investigated. Exact analytical expressions for the minimum energy per information bit, {Eb/N0min, and wideband slope, S0, are derived for both channels. Our results show that the minimum energy per information bit is the same for both channels while their wideband slopes differ significantly. Further, the impact of the numbers of transmit and receive antennas, the Rician K factor, the channel mean matrix and the interference-to-noise-ratio (INR) on the capacity, is addressed. Results indicate that interference degrades the capacity by increasing the required minimum energy per information bit and reducing the wideband slope. Simulation results validate our analytical results. © 2010 IEEE.
Original languageEnglish (US)
Pages (from-to)2549-2560
Number of pages12
JournalIEEE Transactions on Communications
Volume58
Issue number9
DOIs
StatePublished - Sep 17 2010

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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