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首页> 外文会议>International Conference on Communication Technology; 20061127-30; Guilin(CN) >Space-Time Multiuser Detection for Space-Time Block Coded Multicarrier CDMA Systems
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Space-Time Multiuser Detection for Space-Time Block Coded Multicarrier CDMA Systems

机译：空时分组编码多载波CDMA系统的空时多用户检测

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摘要

A blind channel estimation algorithm was proposed to solve the consumption of bandwidth resource. The consumption was caused by resolving the channel information with training sequences in conventional space-time-coded CDMA systems. This blind vector channel impulse response (VCIR) estimation algorithm is suitable for the space-time block coded multicarrier CDMA systems with multiple receiving antennas. Unlike other blind VCIR estimation algorithms, the proposed algorithm can implement the blind estimation when each user employs only one spreading code. Therefore, the maximum number of active users did not decrease. A space-time multiuser detector was constructed for the base station with multiple receiving antennas based on the estimated VCIR. The transmit diversity can be utilized more efficiently and the transmit rate increases while applying space-time block coding to the user side. Simulation results show the more robust performance of the detector than the one which employs another blind channel estimation method.
机译：为了解决带宽资源的消耗，提出了一种盲信道估计算法。消耗是通过在常规的空时编码CDMA系统中用训练序列解析信道信息引起的。这种盲向量信道冲激响应（VCIR）估计算法适用于具有多个接收天线的空时分组编码多载波CDMA系统。与其他盲VCIR估计算法不同，该算法可以在每个用户仅使用一个扩展码时实现盲估计。因此，活动用户的最大数量没有减少。基于估计的VCIR，为具有多个接收天线的基站构建了一个时空多用户检测器。在将空时分组编码应用于用户侧的同时，可以更有效地利用发射分集，并且提高传输速率。仿真结果表明，该检测器的性能比采用另一种盲信道估计方法的检测器更强大。

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