Adaptive optimal transmit power allocation for two-hop non-regenerative wireless relaying system

被引：0
|
作者：
Zhang, JM [1 ]
Qi, Z [1 ]
Shao, CJ [1 ]
Ying, W [1 ]
Ping, Z [1 ]
Zhang, Z [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Wireless Technol Innovat Labs, Beijing 100876, Peoples R China
来源：
VTC2004-SPRING: 2004 IEEE 59TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, PROCEEDINGS | 2004年
关键词：
cooperative relaying; optimal power allocation; channel capacity; non-regenerative;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In order to combat fading in wireless networks and increase the capacity of a system, cooperation is allowed among the terminals in the network. The adaptive optimal power allocation (PA) scheme based on certain system performance is an important issue for the relaying routing and the network operation. This paper analyzes the two-hop non-regenerative (NR) relaying channel with and without diversity, and investigates the optimal PA scheme between the source terminal (TX) and the relaying terminal (RS) under power constraint. Since in the real relaying environments, the transmitter usually knows the instantaneous channel state information (ICSI) of the 1st hop and the statistical channel state information (SCSI) of the 2nd hop, the proposed PA schemes are based on two-hop ICSI and two-hop mixed channel state information (MCSI) respectively. With the adaptive scheme, the system performance not only outperforms that of the direct transmission system, but also obtains the maximum channel capacity or SNR of the relaying system.
引用
收藏
页码：1213 / 1217
页数：5
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