Abstract
In this contribution, we propose a novel differential distributed space-time block coding (DDSTBC) scheme for multi-relay assisted two-way cooperative networks. A low-complexity non-coherent Physical-layer Network Coding (PNC) algorithm is first investigated, which allows direct extraction of network-coded symbols from the received superimposed signal at the relay node without knowledge of Channel State Information (CSI). We show that, although the DDSTBC codewords are constructed by a group of single antenna aided cooperating nodes, the proposed scheme is still capable of attaining full transmit diversity order. The negative effect of error propagation suffered at the relay-to-destination link is addressed using a simple CRC-based selective relaying protocol. In addition, the employment of differential PNC at the intermediate relay node significantly improves the overall network throughput by exchanging information between two users simultaneously.
Original language | English |
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Title of host publication | IEEE Wireless Communications and Networking Conference, WCNC |
Pages | 2416-2421 |
Number of pages | 6 |
DOIs | |
Publication status | Published - 21 Aug 2013 |
Event | 2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 - Shanghai, United Kingdom Duration: 7 Apr 2013 → 10 Apr 2013 |
Conference
Conference | 2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 |
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Country/Territory | United Kingdom |
City | Shanghai |
Period | 7/04/13 → 10/04/13 |
Keywords
- Cooperative Diversity
- Differential Distributed STBC
- Non-Coherent Physical-Layer Network Coding
- Relay Selection Protocol
- Two-Way Relay Channels