Turbo Coded OFDM Combined with MIMO Antennas Based on Matched Interleaver for Coded-Cooperative Wireless Communication

Autor: Shoaib Mughal, Rahim Umar, Fengfan Yang
Rok vydání: 2017
Předmět:
orthogonal frequency division multiplexing (OFDM)
multiple-input multiple-output (MIMO)
Alamouti space time block code (STBC)
code matched interleaver (CMI)
recursive systematic convolutional (RSC)
coded-cooperation
Orthogonal frequency-division multiplexing
Computer science
Real-time computing
MIMO
Data_CODINGANDINFORMATIONTHEORY
02 engineering and technology
Turbo equalizer
Hardware_GENERAL
0202 electrical engineering
electronic engineering
information engineering
Electronic engineering
Computer Science::Information Theory
Rayleigh fading
lcsh:T58.5-58.64
lcsh:Information technology
ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS
020206 networking & telecommunications
Coding gain
Diversity gain
020201 artificial intelligence & image processing
Quadrature amplitude modulation
Information Systems
Phase-shift keying
Zdroj: Information; Volume 8; Issue 2; Pages: 63
Information, Vol 8, Iss 2, p 63 (2017)
ISSN: 2078-2489
DOI: 10.3390/info8020063
Popis: A turbo coded cooperative orthogonal frequency division multiplexing (OFDM) with multiple-input multiple-output (MIMO) antennas scheme is considered, and its performance over a fast Rayleigh fading channel is evaluated. The turbo coded OFDM incorporates MIMO (2 × 2) Alamouti space-time block code. The interleaver design, and its placement always plays a vital role in the performance of a turbo coded cooperation scheme. Therefore, a code-matched interleaver (CMI) is selected as an optimum choice of interleaver and is placed at the relay node. The performance of the CMI is evaluated in a turbo coded OFDM system over an additive white Gaussian noise (AWGN) channel. Moreover, the performance of the CMI is also evaluated in the turbo coded OFDM system with MIMO antennas over a fast Rayleigh fading channel. The modulation schemes chosen are Binary Phase shift keying (BPSK), Quadrature phase shift keying (QPSK) and 16-Quadrature amplitude modulation (16QAM). Soft-demodulators are employed along with joint iterative soft-input soft-output (SISO) turbo decoder at the destination node. Monte Carlo simulated results reveal that the turbo coded cooperative OFDM system with MIMO antennas scheme incorporates coding gain, diversity gain and cooperation gain successfully over the direct transmission scheme under identical conditions.
Databáze: OpenAIRE
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