Title :
AMOUR-generalized multicarrier CDMA irrespective of multipath
Author :
Giannakis, Georgios B. ; Wang, Zhengdao ; Scaglione, Anna ; Barbarossa, Sergio
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
fDate :
6/21/1905 12:00:00 AM
Abstract :
The suppression of multiuser interference (MUI) and mitigation of multipath effects constitute major challenges in the design of third-generation wireless mobile systems. Most wideband and multicarrier uplink CDMA schemes suppress MUI statistically in the presence of unknown multipath and impose restrictive and difficult to check conditions on the FIR channel nulls. Relying on symbol blocking, we design a mutually-orthogonal usercode-receiver (AMOUR) system for quasi-synchronous blind CDMA that eliminates MUI deterministically and mitigates fading irrespective of the unknown multipath and the adopted signal constellation. AMOUR converts a multiuser CDMA system into parallel single-user systems irrespective of multipath and guarantees identifiability of users´ symbols. Simulations reveal the generality, flexibility, and superior performance of AMOUR over competing alternatives
Keywords :
channel bank filters; code division multiple access; fading channels; filtering theory; interference suppression; land mobile radio; multipath channels; multiuser channels; radio links; radio receivers; radiofrequency interference; transient response; AMOUR; FIR channel nulls; fading; filterbank model; generalized multicarrier CDMA; multicarrier uplink CDMA; multipath; multiuser CDMA system; multiuser interference suppression; mutually-orthogonal usercode-receiver system; parallel single-user systems; performance; quasi-synchronous blind CDMA; signal constellation; simulations; symbol blocking; third-generation wireless mobile systems; wideband uplink CDMA; Baseband; Constellation diagram; DSL; Fading; Finite impulse response filter; Frequency estimation; Interference suppression; Multiaccess communication; Multipath channels; Wideband;
Conference_Titel :
Global Telecommunications Conference, 1999. GLOBECOM '99
Conference_Location :
Rio de Janeireo
Print_ISBN :
0-7803-5796-5
DOI :
10.1109/GLOCOM.1999.830229
