| MIMO 시스템에서 반복 복호 알고리즘 기반의 계층적 시공간 부호화 방식 연구 |
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박태두, 정지원 |
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| A Study on layered Space Time Trellis codes for MIMO system based on Iterative Decoding Algorithm |
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Tae-Doo Park, Ji-Won Jung |
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| Abstract |
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The next-generation wireless communication requires fast transmission speeds with various services and high reliability. In order to satisfy these needs we study MIMO system used layered space time coded system (LST) combining space time trellis codes(STTC) with turbo codes. In LST, two codes that are inner and outer codes are concatenated in the serial fashion. The inner codes are turbo Pi codes suggested in DVB-RCS NG system, and outer codes are STTC codes proposed by Blum. The interleaver technique is used to efficiently combine two codes. And we proposed and simulated that a full iteration method between turbo decoder and BCJR decoder to improve the performance instead of only processing inner-iteration turbo decoder. The simulation results of proposed effective layered method show improving BER performance about 1.3~1.5dB than conventional one. |
| Key Words:
MIMO;space time code;turbo code;interleaver |
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