吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (01): 259-0263.

• paper • Previous Articles     Next Articles

Optimal power allocation for a relaying scheme based on network coding

JI Yan-cheng, GE Jian-hua,GAO Yang   

  1. State Key Laboratory of Integrated Service Networks, Xidian University, Xi′an 710071, China
  • Received:2009-03-07 Online:2011-01-01 Published:2011-01-01

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Abstract:

A relaying scheme based on network coding was proposed. After investigating the system outage probability with this relaying scheme, an Optimal Power Allocation (OPA) strategy was given. According to the phase characteristic of M-ary Phase-Shift-Keying (MPSK) modulation, network coding and decoding with PSK signal can be directly implemented at the relay node and base station. Through analysis, the upper bound of the outage probability under high Signalto  Noise Ratio (SNR) was derived. By minimizing the upper bound, an OPA strategy was obtained. Simulation results show that the performance of the proposed scheme is better than that of the traditional one. The system with OPA strategy can achieve significant gains in Symbol Error Rate (SER) performance.

Key words: communication, relay communication, network coding, utage probability, optimal power allocation

CLC Number: 

  • TN925
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