Space Time Turbo Coded OFDM with Joint Transmit and Receive Antenna Selection


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Güçlüoğlu T. , Remlein P.

Advances in Electronics and Telecommunications, cilt.2, ss.63-67, 2011 (Diğer Kurumların Hakemli Dergileri)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 2
  • Basım Tarihi: 2011
  • Dergi Adı: Advances in Electronics and Telecommunications
  • Sayfa Sayıları: ss.63-67

Özet

This paper discusses the performance of antenna

selection technique in space time turbo coded MIMO-OFDM

systems. Multiple-input multiple-output (MIMO) technology can

either increase the data rate through spatial multiplexing or

improve the reliability through diversity. Space-time turbo codes

(STTC) have been proposed to provide robust communications in

MIMO wireless environment. STTC technique incorporates the

methods of transmitter diversity and channel coding to provide

significant reduction of error rates over the traditional communication

systems. The orthogonal frequency division multiplexing

(OFDM) is a modulation method designed to mitigate multipath

distortion and frequency selectivity of wireless channels at high

data-rate transmissions. The MIMO-OFDM technology supports

the advantages of both the MIMO system and the OFDM

technique. In practice, a major impediment in MIMO-OFDM

technology is the cost of hardware, because every antenna element

requires a complete radio frequency (RF) chain to transmit signal

over that element. In many (size and power constrained) mobile

applications, it is desirable to have less RF units in multiple

antenna systems which can be possible with antenna selection

technique. In this paper, joint transmit and receive antenna

selection for a space-time turbo coded MIMO-OFDM system

is investigated. As the selection criterion, maximization of signal

to noise ratio at the receiver is used for per-tone and all-tone

selection methods. The simulation results show that the studied

system improves performance by achieving significant diversity

gains which makes it attractive for the next generation wireless

standards.