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首页> 外文会议>IEEE Vehicular Technology Conference >Multipath interference canceller using soft-decision replica combined with hybrid ARQ in W-CDMA forward link
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Multipath interference canceller using soft-decision replica combined with hybrid ARQ in W-CDMA forward link

机译：MultiPath干扰消除器使用软判决复制品与W-CDMA前向链路中的混合ARQ组合

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摘要

This paper proposes a multipath interference canceller (MPIC) that employs soft-decision replica generation combined with hybrid ARQ (HARQ) to achieve a peak throughput of more than 10 Mbps in a multipath-fading environment in the W-CDMA forward link. In the proposed scheme, more accurate multipath interference (MPI) replica generation is possible by decreasing the influence of data-decoding errors associated with the reliability of the originally transmitted and retransmitted packets. Simulation results elucidate that by applying the soft-decision replica, a four-stage MPIC improves the peak throughput by approximately 300 kbps and 1 Mbps with 64 QAM data modulation in an average equal level 2- and 3-path Rayleigh fading channel compared with the MPIC using the hard-decision replica, respectively. In addition, by effectively combining the originally transmitted packet with the identical retransmitted one in soft-decision MPI replica generation, the throughput performance is further improved by approximately 300 kbps in a 3-path environment. Consequently, we clarify that the maximum peak throughput using the proposed MPIC achieves approximately 11.8 and 10.4 Mbps with 64 QAM data modulation in a 2- and 3-path Rayleigh fading channel, respectively, within a 5-MHz bandwidth.
机译：本文提出了一种多径干扰消除器（MPIC），采用软判决复制品与混合ARQ（HARQ）组合，在W-CDMA向前链路中的多径衰落环境中实现超过10 Mbps的峰值吞吐量。在所提出的方案中，通过减少与最初发送的分组的可靠性相关联的数据解码误差的影响，可以更准确地进行更准确的多径干扰（MPI）副本生成。仿真结果阐明，通过应用软判决复制，四级MPIC将峰值吞吐量提高了大约300kbps，并且在平均等级2和3路径瑞利衰落信道中，具有64 QAM数据调制。与MPIC分别使用硬判决副本。另外，通过在软判决MPI副本生成中有效地将最初发送的分组与相同的重传，通过在3路径环境中进一步提高到大约300kbps的吞吐量性能。因此，我们阐明了使用所提出的MPIC的最大峰值吞吐量，分别在5-MHz的带宽中分别在2和3路径瑞利衰落通道中具有64 QAM数据调制的大约11.8和10.4Mbps。

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