Browse by author
Lookup NU author(s): Dr Salama Ikki
In this article, space shift keying (SSK) modulation is used to study a wireless communication system when multiple relays are placed between the transmitter and the receiver. In SSK, the indices of the transmit antennas form the constellation symbols and no other data symbol are transmitted. The transmitter and the receiver communicate through a direct link and the existing relays. In this study, two types of relays are considered. Conventional amplify and forward relays in which all relays amplify their received signal and forward it to the destination in a round-robin fashion. In addition, decode and forward relays in which the relays that correctly detect the source signal will forward the corresponding fading gain to the destination in pre-determined orthogonal time slots are studied. The optimum decoder for both communication systems is derived and performance analysis are conducted. The exact average bit error probability (ABEP) over Rayleigh fading channels is obtained in closed-form for a source equipped with two transmit antennas and arbitrary number of relays. Furthermore, simple and general asymptotic expression for the ABEP is derived and analyzed. Numerical results are also provided, sustained by simulations which corroborate the exactness of the theoretical analysis. It is shown that both schemes perform nearly the same and the advantages and disadvantages of each are discussed.
Author(s): Mesleh R, Ikki S, El-Hadi M, Mansour A
Publication type: Article
Publication status: Published
Journal: EURASIP Journal on Advances in Signal Processing
Year: 2012
Volume: 2012
Issue: 2
Pages: 201
Print publication date: 18/09/2012
Date deposited: 04/04/2013
ISSN (print): 1687-6172
ISSN (electronic): 1687-6180
Publisher: SpringerOpen
URL: http://dx.doi.org/10.1186/1687-6180-2012-201
DOI: 10.1186/1687-6180-2012-201
Altmetrics provided by Altmetric
