Impact of LTE precoding for fixed and adaptive rank transmission in moving relay node system
ITS Telecommunications(2013)
摘要
Improved capacity and reliability of wireless networks can be achieved by users onboard in a high speed train with the use of moving relay nodes (MRN) cooperating with each other. Further improvement in performance is achieved with codebook based precoders adopted by third generation partnership project (3GPP) for spatial multiplexed transmission mode. Open loop and closed loop precoded spatial multiplexing for fixed and adaptive rank transmissions were simulated and analyzed on the backhaul link of a cooperative MRN system in a high speed train. To obtain improved performance, channel information in the form of precoder matrix indicator (PMI) and rank indicator (RI) are required for the closed loop operation while the RI is only needed for the open loop operation. The results show that throughput gain on the backhaul link of the cooperative MRN system can be achieved with the precoded transmission when compared to unprecoded spatial multiplexing transmission. Further improvement in throughput was achieved when the transmission rank changed dynamically according to the channel condition.
更多查看译文
关键词
3G mobile communication,Long Term Evolution,codecs,cooperative communication,precoding,space division multiplexing,telecommunication channels,telecommunication network reliability,3GPP,LTE precoding,adaptive rank transmission,adaptive rank transmissions,backhaul link,channel information,closed loop operation,closed loop precoded spatial multiplexing,codebook based precoders,cooperative MRN system,fixed rank transmission,high speed train,moving relay node system,moving relay nodes,open loop operation,open loop precoded spatial multiplexing,precoded transmission,precoder matrix indicator,rank indicator,spatial multiplexed transmission mode,third generation partnership project,transmission rank,unprecoded spatial multiplexing transmission,wireless networks capacity,wireless networks reliability
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络