Title :
A study about maximum data rate and transmission power of (Decode-and-Forward) cooperative communication in WSN
Author :
Kim, Gun-Seok ; Kong, Hyung-Yun
Author_Institution :
Sch. of Electr. Eng., Univ. of Ulsan, Ulsan
Abstract :
In this paper, we propose a new scheme which achieves full data rate based on DF (decode-and-forward) cooperative transmission scheme. The proposed scheme based on time division multiplexing (TDM) for channel access. When DF protocol has maximum data rate, it can not obtain diversity efficient under the pair wise error probability (PEP) viewpoint. If it increases timeslot to gain diversity efficient, then data rate is reduced. Our proposed algorithm uses orthogonal frequency and constellation rotation to obtain both full data rate and diversity order of 2. Simulation results reveal that the cooperation can save the network power up to 7dB over direct transmission at BER of 10-2. Besides it can improve date rate of system compared with that of the conventional DF.
Keywords :
error statistics; protocols; time division multiplexing; wireless channels; wireless sensor networks; DF protocol; bit error rate; channel access; constellation rotation; decode-and-forward cooperative communication; maximum data rate; network power; orthogonal frequency; pair wise error probability; time division multiplexing; transmission power; wireless sensor network; Access protocols; Bit error rate; Data engineering; Decoding; Frequency; Pairwise error probability; Rayleigh channels; Relays; Time division multiplexing; Wireless sensor networks; constellation rotation; cooperative transmission; decode-and-forward; power consumption;
Conference_Titel :
Strategic Technology, 2007. IFOST 2007. International Forum on
Conference_Location :
Ulaanbaatar
Print_ISBN :
978-1-4244-3589-0
Electronic_ISBN :
978-1-4244-1831-2
DOI :
10.1109/IFOST.2007.4798656
