System Optimization, Full Data Rate and Transmission Power of Decode-and-Forward Cooperative Communication in WSN


The KIPS Transactions:PartC, Vol. 14, No. 7, pp. 597-602, Dec. 2007
10.3745/KIPSTC.2007.14.7.597,   PDF Download:

Abstract

In conventional cooperative communication data rate is 1/2 than non cooperative protocols. In this paper, we propose a full data rate DF (Decode and Forward) cooperative transmission scheme. Proposed scheme is based on time division multiplexing (TDM) channel access. When DF protocol has full data rate, it can not obtain diversity gain under the pairwise error probability (PEP) view point. If it increases time slot to obtain diversity gain, then data rate is reduced. The proposed algorithm uses orthogonal frequency and constellation rotation to obtain both full data rate and diversity order 2. Moreover, performance is analyzed according to distance and optimized components that affect the system performance by using computer simulation. The simulation results revealed that the cooperation can save the network power up to 7dB over direct transmission and 5dB over multi-hop transmission at BER of 10-2. Besides, it can improve date rate of system compared with the conventional DF protocol.


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Cite this article
[IEEE Style]
G. S. Kim and H. Y. Kong, "System Optimization, Full Data Rate and Transmission Power of Decode-and-Forward Cooperative Communication in WSN," The KIPS Transactions:PartC, vol. 14, no. 7, pp. 597-602, 2007. DOI: 10.3745/KIPSTC.2007.14.7.597.

[ACM Style]
Gun Seok Kim and Hyung Yun Kong. 2007. System Optimization, Full Data Rate and Transmission Power of Decode-and-Forward Cooperative Communication in WSN. The KIPS Transactions:PartC, 14, 7, (2007), 597-602. DOI: 10.3745/KIPSTC.2007.14.7.597.