Multiple TAS-OSTBC in MIMO with Outer BCH Concatenation under Nakagami-m Fading
Vaibhav Hendre1, Nitin Deotale2
1Vaibhav Hendre, Department of Electronics & Telecommunication Engineering, G. H. Raisoni College of Engineering & Management, Pune, Maharashtra, India
2Nitin Deotale, Department of Electronics & Telecommunication Engineering, Lokmanya Tilak College of Engineering, Navi Mumbai, Maharashtra, India.
Manuscript received on August 03, 2019. | Revised Manuscript received on August 30, 2019. | Manuscript published on August 30, 2019. | PP: 3054-3058 | Volume-8 Issue-6, August 2019. | Retrieval Number: F8409088619/2019©BEIESP | DOI: 10.35940/ijeat.F8409.088619
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Abstract: Transmit Antenna Selection (TAS) technique with Orthogonal Space Time Block Code (OSTBC) addresses the problem of hardware complexity in multiple antenna systems and improves Bit Error Rate (BER) significantly by using various antenna selection algorithms. TAS technique is not able to provide the coding gain. To achieve the coding gain benefits with improvement in BER, it is necessary to concatenate TAS system with an outer code. In literature, it is observed that the concatenation of Forward Error Correction (FEC) codes and Space Time Block Code (STBC) for MIMO systems provides the high coding gain with improved BER. In this paper, a multiple TAS-OSTBC system is proposed with concatenation of channel coding techniques such as BCH and TURBO. The proposed system is concatenated with BCH as outer code in series with TURBO as inner code. This combination provides the capacity benefits of TAS-OSTBC system with improved coding gain. The channel is assumed to be faded by Nakagami- m fading. It is observed that for multiple TAS-OSTBC system this new concatenation of BCH-TURBO code gives improvement of 5 dB at 10-6 as compared to concatenation of TURBO code at m =0.5 for Nakagami- m fading parameter.
Keywords: Bit error Rate (BER), Bose Chaudhuri Hocquenghem (BCH) code, Nakagami- m Fading, TURBO Codes, Orthogonal Space Time Block Codes (OSTBC), Transmit Antenna Selection (TAS)