Asymptotic ergodic capacity analysis for MIMO amplify-and-forward relay networks

Kyoung Jae Lee, Jin Sung Kim, Giuseppe Caire, Inkyu Lee

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

In this letter, we analyze asymptotic ergodic capacity of MIMO amplify-and-forward (AF) relaying systems which employ linear processing at the relay. By exploiting the asymptotic results for eigenvalue distributions, we derive the ergodic capacity in various asymptotic antenna regimes as a closed-form expression with arbitrary system parameters. The analyzed results demonstrate that increasing the number of source antennas causes the capacity shrink phenomenon which is analogous to the channel hardening effect in multi-user MIMO systems. Although we assume asymptotically large antennas to obtain the closed-form expressions, simulation results show that our derived expressions are surprisingly accurate even with the moderate number of antennas, and thus can serve for analyzing practical MIMO relay networks.

Original languageEnglish
Article number5529756
Pages (from-to)2712-2717
Number of pages6
JournalIEEE Transactions on Wireless Communications
Volume9
Issue number9
DOIs
Publication statusPublished - 2010 Sep 1

Fingerprint

Ergodic Capacity
Relay Networks
Amplify-and-forward
MIMO systems
Multiple-input multiple-output (MIMO)
Antenna
Antennas
Closed-form
Multiuser MIMO
Eigenvalue Distribution
MIMO Systems
Hardening
Relay
Arbitrary
Processing
Demonstrate
Simulation

Keywords

  • ergodic capacity
  • Multiple antennas
  • relay

ASJC Scopus subject areas

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

Cite this

Asymptotic ergodic capacity analysis for MIMO amplify-and-forward relay networks. / Lee, Kyoung Jae; Kim, Jin Sung; Caire, Giuseppe; Lee, Inkyu.

In: IEEE Transactions on Wireless Communications, Vol. 9, No. 9, 5529756, 01.09.2010, p. 2712-2717.

Research output: Contribution to journalArticle

Lee, Kyoung Jae ; Kim, Jin Sung ; Caire, Giuseppe ; Lee, Inkyu. / Asymptotic ergodic capacity analysis for MIMO amplify-and-forward relay networks. In: IEEE Transactions on Wireless Communications. 2010 ; Vol. 9, No. 9. pp. 2712-2717.
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