Effect of multiple antennas at the source on outage probability for amplify-and-forward relaying systems

Hyunkee Min, Sungeun Lee, Kyungchul Kwak, Daesik Hong

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

The amplify-and-forward (AF) relaying system considered here consists of a source node with M transmit antennas, and relay and destination nodes with a single antenna each. The closed-form expressions for the outage probabilities for maximum-ratio-transmission (MRT) at the source are presented for some specific values of M. Numerical results show that increasing M from 1 to 2 can achieve roughly a 3dB SNR gain, guaranteeing the same outage probability. However, we discover that for M 3, the additional gain compared to M = 2 decreases quickly as the SNR increases. Therefore, increasing M above 3 does not achieve significantly greater gain over M = 2 at high SNR.

Original languageEnglish
Article number4786420
Pages (from-to)633-637
Number of pages5
JournalIEEE Transactions on Wireless Communications
Volume8
Issue number2
DOIs
Publication statusPublished - 2009 Feb 1

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Multiple Antennas
Amplify-and-forward
Outage Probability
Outages
Antennas
Antenna
Vertex of a graph
Relay
Closed-form
Numerical Results
Decrease

All Science Journal Classification (ASJC) codes

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

Cite this

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Effect of multiple antennas at the source on outage probability for amplify-and-forward relaying systems. / Min, Hyunkee; Lee, Sungeun; Kwak, Kyungchul; Hong, Daesik.

In: IEEE Transactions on Wireless Communications, Vol. 8, No. 2, 4786420, 01.02.2009, p. 633-637.

Research output: Contribution to journalArticle

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