60GHz芯片间无线互连系统中的Rake接收性能

Performance of Rake Receiver in 60 GHz Inter Chip Wireless Interconnect System

在60 GHz芯片间无线互连信道中存在着多径干扰问题,采用Rake接收是提高系统性能的重要手段。针对脉冲超宽带(IR-UWB)的芯片间无线互连系统,分析了多径信道下Rake接收机的误码性能。在IEEE 802.15.3c信道模型基础上,对不同分支数以及不同合并方案下的选择Rake(SRake)和部分Rake(P-Rake)接收机误码性能进行了研究。仿真结果表明采用支路数为2的PRake在数据速率为10 Gb/s时仍具有良好的抗多径性能,这为芯片间无线互连系统的Rake接收方案提供了技术参考。

In 60 GHz inter chip wireless interconnec channel,signals suffer from multipath propagation. Rake reception is an important way to boost the performance of receivers. With the assumption that impulse radio ultra-wideband（IR-UWB） is used to inter chip wireless interconnect system,the bit error rate（BER） per-formance of Rake receivers in multipath channels is analyzed. Based on the channel model approved by IEEE802. 15. 3c group,the BER performance of Selective-Rake（S-Rake） and Partial-Rake（P-Rake） are simulated by using different number of Rake taps and different weighted consolidation strategies. Simulation results show that P-Rake with two taps has better anti-multipath performance for 10 Gb/s. The research pro-vides the technique reference for Rake receiver design of inter chip wireless interconnect systems.