Title :
Relay assisted and Cooperative CDD MC-CDMA network with frequency-correlated subcarriers
Author :
Guerrero, L. ; Said, F. ; Lodhi, A. ; Aghvami, A.H.
Author_Institution :
Centre for Telecommun. Res., King´´s Coll. London, London, UK
Abstract :
Distributed Cooperative Cyclic Delay Diversity (DCCDD) multi-hop relay network is shown to yield superior performance over traditional link network. The benefits provided by increased frequency selectivity caused by the cyclic delays are evaluated through the explicit closed-form BER expressions and maximum achievable throughput [bits/s/Hz]. Towards that end resource allocation strategies in terms of fractional frame duration and transmission power are assigned. By using the moment generating function (MGF) of the correlated Nakagami-m random variable and considering a realistic case of frequency-correlated multicarrier code division multiple-access (MC-CDMA) system, allocation strategies are derived and analyzed in order to maximize the end-to-end throughput. Monte-Carlo simulations are used to numerically verify the analytical framework with maximum ratio combining (MRC) detection technique.
Keywords :
Monte Carlo methods; Nakagami channels; code division multiple access; diversity reception; error statistics; resource allocation; Monte-Carlo simulations; Nakagami-m fading channels; closed-form BER expression; cooperative CDD MC-CDMA network; correlated Nakagami-m random variable; cyclic delays; distributed cooperative cyclic delay diversity multihop relay network; end-to-end throughput; frequency selectivity; frequency-correlated multicarrier code division multiple-access system; frequency-correlated subcarriers; link network; maximum achievable throughput; maximum ratio combining detection technique; moment generating function; relay assisted network; resource allocation strategies; Bit error rate; Delay; Diversity reception; Frequency; Multicarrier code division multiple access; Random variables; Relays; Resource management; Spread spectrum communication; Throughput; Cyclic delay diversity; Frequency correlated subcarriers; MC-CDMA system; Nakagami-m fading channels; allocation strategies; multi-hop relay network;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5122-7
Electronic_ISBN :
978-1-4244-5123-4
DOI :
10.1109/PIMRC.2009.5449958
