STBC Transceiver System Using Tomlinson-Harashima pre coding
Journal Title: International Journal of Research in Computer and Communication Technology - Year 2015, Vol 4, Issue 4
Abstract
A precoding configuration for double space-time block coding (STBC) system is investigated in this paper, i.e., the joint process of STBC and dirty paper coding (DPC) methods. These methods are utilized for evading double spatial streams interference and enhancing the transmitter differences. The proposed system is interference free on multi-user or multiantenna. The STBC transceiver can give the transmit differences. In order to reduce bit error rate and PAPR (Peak to Average Power Ratio), a new system called STBC-DPC is proposed. The transceiver design using this system yields a reliable performance. QR decomposition of channel matrix and the maximum likelihood (ML) one-dimensional searching algorithm are the two methods employed in the transceiver design. The channel switching is done by utilizing water filling algorithm which can avoid the deep fading channel effect. The proposed STBCDPC system with the modulus operation to obtain the transmit sign level, i.e., Tomlinson-Harashima precoding (THP) scheme, reduces PAPR to a significant level. Simulation results conform the proposed system can provide low PAPR and excellent BER performances.
Authors and Affiliations
Nathireddy Pavankumar, C Dharma Raj
Keywords
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