Physical Communication ( IF 2.2 ) Pub Date : 2020-07-16 , DOI: 10.1016/j.phycom.2020.101162 Bowen Lu , Fusheng Zhu , Junjuan Xia , Xutao Li , Wen Zhou , Liseng Fan
In this paper, we investigate the interference suppression by exploiting wireless cache in relaying networks for beyond fifth-generation (B5G) communications, where multiple decode-and-forward (DF) relays equipped with wireless cache assist the data transmission from the source to the destination over cochannel interference environments. To alleviate the severe effect of interference, wireless cache at the relays can be exploited to suppress the interference. Specifically, if the requested file falls into the cache at the relays, the relays can directly send the file to the destination; otherwise, the source has to send the file to the destination through the two-hop relaying. To further enhance the system performance, several relay selection criteria are proposed to select the best relay to suppress the interference, in order to assist the data transmission. The system transmission performance is evaluated by analyzing the system outage probability via the analytical and asymptotic expressions. Finally, simulation results are demonstrated to verify the proposed studies and the merits of wireless cache in suppressing the interference.
中文翻译:
通过在中继网络中利用无线缓存进行B5G通信来抑制干扰
在本文中,我们通过在中继网络中利用无线缓存来进行第五代(B5G)以外的通信来研究干扰抑制,其中,配备有无线缓存的多个解码转发(DF)中继有助于从源到终端的数据传输。同信道干扰环境中的目标。为了减轻干扰的严重影响,可以利用中继站的无线缓存来抑制干扰。具体来说,如果所请求的文件在中继站落入缓存中,则中继站可以将文件直接发送到目标;否则,源必须通过两跳中继将文件发送到目标。为了进一步提高系统性能,提出了几种中继选择标准,以选择最佳中继来抑制干扰,为了协助数据传输。通过使用解析表达式和渐近表达式分析系统中断概率来评估系统传输性能。最后,仿真结果证明了所提出的研究以及无线高速缓存在抑制干扰方面的优点。