Performance comparison of MRC and IC under transmit diversity

Juan P. Peña-Martin, Juan M. Romero-Jerez, Gabriel Aguilera, Andrea J. Goldsmith

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

This work explores the performance of MIMO (multiple-input/multiple-output) systems in Rayleigh fading channels with co-channel interference (CCI) and thermal noise. We provide analytical expressions for the outage probability of maximal ratio transmission combined with one of two different receive antenna array schemes, maximal ratio combining (MRC) and interference cancellation (IC) via null steering of the array pattern. We derive the statistics of the signal to interferenceplus-noise ratio (SINR) for each technique in a closed-form and obtain an integral expression to calculate the average bit error rate (BER) or symbol error rate (SER). Our results show the conditions under which IC yields significantly better performance than MRC and vice versa. We also determine the impact on performance of the number of antennas in the transmit array.

Original languageEnglish (US)
Pages (from-to)2484-2493
Number of pages10
JournalIEEE Transactions on Wireless Communications
Volume8
Issue number5
DOIs
StatePublished - May 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Keywords

  • Average bit error rate
  • Cochannel interference
  • Interference cancellation
  • Maximal ratio combining
  • Maximal ratio transmission
  • Mimo systems
  • Outage probability
  • Rayleigh channels

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