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

fYear

2011

fDate

5-8 Sept. 2011

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Fall), 2011 IEEE

Conference_Location

San Francisco, CA

ISSN

1090-3038

Print_ISBN

978-1-4244-8328-0

Type

conf

DOI

10.1109/VETECF.2011.6092971

Filename

6092971