Title :
On the design of uplink and downlink group-orthogonal multicarrier wireless systems
Author :
Riera-Palou, Felip ; Femenias, Guillem ; Ramis, Jaume
Author_Institution :
Dept. of Math. & Inf., Univ. of the Balearic Islands (UIB), Palma de Mallorca
fDate :
10/1/2008 12:00:00 AM
Abstract :
Group-orthogonal multicarrier code-division multiple access (GO-MC-CDMA) has been proposed as an attractive multiplexing technique for the uplink segment of wireless systems. More recently, a variant of this scheme has also been proposed for the downlink. This paper presents a unified bit error rate (BER) performance analysis of group-orthogonal wireless systems when using maximum likelihood (ML) multiuser/multisymbol detection covering both link directions. Valuable design rules regarding the number of subcarriers per group and the selection of spreading codes are derived. Simulations results using realistic system parameters and ETSI BRAN channel models are also presented which serve to validate the analytical results.
Keywords :
code division multiple access; error statistics; maximum likelihood detection; multiuser detection; orthogonal codes; ETSI BRAN channel models; code-division multiple access; group-orthogonal multicarrier wireless system; maximum likelihood multiuser-multisymbol detection; spreading codes; unified bit error rate performance analysis; Bit error rate; Code division multiplexing; Downlink; Frequency conversion; Interference; Maximum likelihood detection; Multiaccess communication; Multicarrier code division multiple access; OFDM; Performance analysis; Group-orthogonal multicarrier code-division multiple access (GO-MC-CDMA); code-division multiplex (CDM); diversity, multiuser interference (MUI); maximum likelihood (ML);
Journal_Title :
Communications, IEEE Transactions on
Conference_Location :
10/1/2008 12:00:00 AM
DOI :
10.1109/TCOMM.2008.060497
