Title :
Exact and asymptotic BEP of cooperative DS-CDMA systems using decode and forward relaying in the presence of multipath propagation
Author_Institution :
TECHTRA Res. Unit, Higher Sch. of Commun. of Tunis, Ariana, Tunisia
fDate :
9/1/2009 12:00:00 AM
Abstract :
In this paper, we derive the bit error probability (BEP) of cooperative DS-CDMA systems using decode and forward (DF) relaying. We consider a conventional DF protocol where all the relays that have correctly decoded transmit and a selective DF (S-DF) protocol where we activate only the relay that offers the best instantaneous signal to noise ratio (SNR) of the relay to destination link among the relays that have correctly decoded. The derived results are valid for any multipath intensity profile of the channel, any path delays and take into account the correlation of the multipath gains.
Keywords :
Nakagami channels; Rayleigh channels; code division multiple access; decoding; delays; diversity reception; error statistics; multipath channels; radio links; radio receivers; spread spectrum communication; asymptotic BEP; bit error probability; cooperative DS-CDMA systems; decode and forward relaying; multipath intensity profile; multipath propagation; selective DF protocol; signal to noise ratio; Decoding; Delay; Error probability; Fading; Multiaccess communication; Multipath channels; Protocols; Relays; Signal to noise ratio; Wireless communication; Cooperative diversity; DS-CDMA systems; Rayleigh channel; decode and forward; rake receiver;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2009.081672
