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For multi-sources transmitting to a common sink with assistance of relays where network coding is used, different symbols may experience different fading and noise levels, and there is a need to calculate the average symbol detection error probability at the receiver. In this letter, we present a method that closely bounds the error performance when log-likelihood ratio (LLR) detection is used. The...
A novel information exchange scheme is proposed in this paper, which integrates Network Coding (NC) and Superposition Coding (SC) in two-way relay networks. The scheme focuses on the information exchange among more than two nodes through relay node in fewer time slots. Firstly, the Integrating Network Coding and Superposition Coding (INSC) scheme is proposed in scenarios with and without overhearing...
Random Network Coding (RNC) has emerged as an important technology in wireless communication. The present paper proposes a novel cooperative Virtual-MIMO (V-MIMO) structure by applying RNC to the cooperative transmission. Then the diversity gain of the RNC-based cooperative strategy is analyzed and compared with the conventional cooperative strategies. Higher diversity gain or multiplexing gain can...
In this paper, we investigate the cooperative communication performance involving space-time block codes (STBC), channel coding, network code and turbo decoding in a wireless Ad-hoc network scenario where two relays are employed for communications from a number of senders to a common sink. To reduce bandwidth and achieve diversity gain, STBC is applied at the two relays. Based on whether network coding...
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