Optimum Turbo Equalization Method based on Layered Space Time Codes in Underwater Communications
نویسندگان
چکیده
منابع مشابه
On turbo equalization of interleaved space-time codes
Space-time coding over frequency selective timevarying fading channels is considered. The approach is based on deploying bit/symbol interleaved space-time codes. Decoding is based on the iterative concatenation of a soft-in soft-out MIMO equalizer with a soft-in soft-out decoder. The equalizer structure comprises a bank of matched filters followed by a maximum a posteriori processor with an app...
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This work considers a high rate, multiple input multiple output (MIMO) system using multiple codes, as well as channel coding and space time (ST) coding. The transmitter consists of a channel encoder followed by parallel Linear Dispersion Codes (LDC) ST encoders using different spreading codes. The iterative receiver consists of a soft input and soft output (SISO) demodulator, followed by a SIS...
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Introduction: Recently, there has been a surge of interests in the design of the so called \space{time" codes which take advantage of both the spatial diversity provided by multiple antennas and the temporal diversity available with time{varying fading. The previous proposed space{time codes were mainly based on trellis codes or orthogonal block codes. In those codes, the number of transmitter ...
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Turbo codes were recently proposed by Berrou, Glavieux, and Thitimajshima [2], and it has been claimed these codes achieve near-Shannon-limit error correction performance with relatively simple component codes and large interleavers. A required Eb/No of 0.7 dB was reported for a bit error rate of 10 −5, using a rate 1/2 turbo code [2]. However, some important details that are necessary to repro...
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As wireless communication systems look intently to compose the transition from voice communication to interactive Internet data, achieving higher bit rates becomes both increasingly desirable and challenging. Space-time coding (STC) is a communications technique for wireless systems that inhabit multiple transmit antennas and single or multiple receive antennas. Space-time codes make use of adv...
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ژورنال
عنوان ژورنال: Journal of the Korea Institute of Information and Communication Engineering
سال: 2014
ISSN: 2234-4772
DOI: 10.6109/jkiice.2014.18.5.1042