Title :
A Distributed Differential Space-Time Coding Scheme With Analog Network Coding in Two-Way Relay Networks
Author :
Huo, Qiang ; Song, Lingyang ; Li, Yonghui ; Jiao, Bingli
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China
Abstract :
In this correspondence, we consider general two-way relay networks (TWRNs) with two source and N relay nodes. A distributed differential space time coding with analog network coding (DDSTC-ANC) scheme is proposed. A simple blind estimation and a differential signal detector are developed to recover the desired signal at each source. The pairwise error probability (PEP) and block error rate (BLER) of the DDSTC-ANC scheme are analyzed. Exact and simplified PEP expressions are derived. To improve the system performance, the optimum power allocation (OPA) between the source and relay nodes is determined based on the simplified PEP expression. The analytical results are verified through simulations.
Keywords :
blind source separation; channel allocation; diversity reception; error statistics; network coding; signal detection; space-time codes; ANC; BLER; DDSTC; PEP; TWRN; analog network coding; blind estimation; block error rate; differential signal detection; distributed differential space-time coding; optimum power allocation; pairwise error probability; relay node; source node; two way relay network; Bismuth; Decoding; Encoding; Network coding; Protocols; Relays; Vectors; Analog network coding; distributed differential space-time coding; two-way relay network;
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2012.2202654
