Title :
On Performance of Judging Region and Power Allocation for Wireless Network Coding with Asymmetric Modulation
Author :
Zhang, Xiaoguang ; Li, Yonghua ; Lin, Jiaru ; Guo, Li ; He, Zhiqiang
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
We investigate a decode and forward (DF) scheme of Asymmetric modulation suited for two-way relay (TWR) with network coding. The considering network coding consists of two time-slots: two users transmit wireless signal to the relay in time slot 1, and the processed signal is broadcasted in time-slot 2 by the relay. With the received asymmetric modulated signals by relay in time-slot 1, the judging, coding and power allocating problems are investigated. A judging region (JR) scheme is proposed to solve the issues and the symbol error ratio (SER) is derived. We also give the optimized power allocation method of JR scheme according to different asymmetric modulations. The performance evaluations show correctness of SER expression and efficiency of power allocation method.
Keywords :
modulation coding; network coding; radio networks; JR scheme; asymmetric modulation signal; decode and forward scheme; judging region scheme; optimized power allocation method; symbol error ratio; two-way relay; wireless network coding; Encoding; Network coding; Phase shift keying; Relays; Resource management; Transmitters;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2011 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-8328-0
DOI :
10.1109/VETECF.2011.6092971
