首页> 外国专利> APPROXIMATE-OPTIMAL MULTI-INPUT MULTI-OUTPUT CHANNEL DETECTION THROUGH SEQUENTIAL MONTE CARLO METHOD, PARTICULARLY FOR ATTAINING APPROXIMATE-OPTIMAL PERFORMANCE WITH LOW COMPLEXITY BY PROVIDING NEW DEMODULATION ALGORITHM OF THE SAME KIND

APPROXIMATE-OPTIMAL MULTI-INPUT MULTI-OUTPUT CHANNEL DETECTION THROUGH SEQUENTIAL MONTE CARLO METHOD, PARTICULARLY FOR ATTAINING APPROXIMATE-OPTIMAL PERFORMANCE WITH LOW COMPLEXITY BY PROVIDING NEW DEMODULATION ALGORITHM OF THE SAME KIND

机译：通过顺序蒙特卡罗方法进行近似最佳的多输入多输出通道检测，特别是通过提供相同种类的新的解调算法，以较低的复杂度获得近似最佳的性能

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PURPOSE: An approximate-optimal MIMO(Multi-Input Multi-Output) channel detection through an SMC(Sequential Monte Carlo) method is provided to attain excellent, stable performance with an SMC MIMO demodulator, compared with a statistical demodulator. CONSTITUTION: A soft MIMO demodulator(210) selects a received signal given by a certain equation as an input, besides external information transmitted to a channel decoder(260). A previous symbol probability is calculated by a symbol probability calculator(220). A bit LLR(Log-Likelihood Ratios) computer(240) calculates posthumous LLRs of an interleaved code bit(bn(i)) based on a posthumous symbol probability that is calculated by the soft demodulator(210). The posthumous LLRs of the code bit(bn(i)) are calculated by the channel decoder(260), interleaved by an interleaver(230), and then, fed back to the soft MIMO demodulator(210). The external information that has been delivered by the soft MIMO demodulator(210) is deinterleaved by a deinterleaver(250) and then fed back as previous information to the channel decoder(260). The soft demodulator(210) takes the previous LLRs of the code bit as an input and delivers updated LLRs of the information bit as an output. The output of the soft demodulator(210) is the sum of the previous information and the external information delivered by the channel decoder(260). At the end of turbo repetition, the posthumous LLRs of the code bit is fed back to a MIMO channel estimator(270) from the soft channel decoder(260) through an interleaver(280), for channel re-estimation.

机译：目的：通过SMC（顺序蒙特卡洛）方法提供了近似最优的MIMO（多输入多输出）信道检测，与统计解调器相比，它可以通过SMC MIMO解调器获得出色的稳定性能。组成：软MIMO解调器（210）除了传输到信道解码器（260）的外部信息之外，还选择由特定方程式给出的接收信号作为输入。先前的符号概率由符号概率计算器（220）计算。比特LLR（对数似然比）计算机（240）基于由软解调器（210）计算出的遗留符号概率来计算交织码比特（bn（i））的遗留LLR。码位（bn（i））的死后LLR由信道解码器（260）计算，由交织器（230）交织，然后反馈到软MIMO解调器（210）。由软MIMO解调器（210）传递的外部信息由解交织器（250）解交织，然后作为先前信息反馈给信道解码器（260）。软解调器（210）将代码位的先前LLR作为输入，并且将信息位的更新的LLR作为输出。软解调器（210）的输出是先前信息和由信道解码器（260）传送的外部信息之和。在turbo重复的结尾，通过交织器（280）从软信道解码器（260）将码比特的死后LLR反馈到MIMO信道估计器（270），以进行信道重新估计。

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公开/公告号KR20040077576A

专利类型
公开/公告日2004-09-04

原文格式PDF
申请/专利权人 NEC LABORATORIES AMERICA INC.;
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申请/专利号KR20040013818
发明设计人 WANG XIAODONG;
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申请日2004-02-28
分类号H04B7/04;
国家 KR
入库时间 2022-08-21 22:48:06

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