Title :
A spectrum-efficient broadcast scheme based on network coding in cellular MIMO systems
Author :
Zhongyuan Zhao ; Zhiguo Ding ; Bin Han ; Xinqian Xie ; Wenbo Wang ; Mugen Peng
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, a network coding broadcast (NC-BC) scheme is proposed to improve the spectral efficiency for multipleinput and multiple-output (MIMO) transmissions. Particularly by network coding the base station broadcast message with each user message respectively, NC-BC can save the radio resource allocated for base station broadcasting, which is necessary in conventional time division-based scheme. Moreover, the iterative precoding design for NC-BC is studied for approaching the optimal performance, and the sub-optimal precoding design with low complexity is also provided. The simulation results show that the proposed NC-BC scheme with precoding optimization can further improve the system transmission performance.
Keywords :
MIMO communication; broadcast communication; cellular radio; iterative decoding; network coding; radio spectrum management; resource allocation; time division multiplexing; NC-BC scheme; base station broadcast message; base station broadcasting; cellular MIMO systems; iterative precoding design; multiple-input-and-multiple-output transmissions; network coding broadcast scheme; radio resource allocation; spectral efficiency improvement; spectrum-efficient broadcast scheme; suboptimal precoding design; system transmission performance improvement; time division-based scheme; Bit error rate; MIMO; Network coding; Optimization; Phase shift keying; Resource management; Vectors;
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2013 IEEE
Conference_Location :
Shanghai
Print_ISBN :
978-1-4673-5938-2
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2013.6554766
