Title :
Total weighted square correlation of multipath multibase synchronous DS-CDMA systems
Author :
Cotae, Paul ; Pantic-Tanner, Zorica ; Aguirre, Matt
Author_Institution :
Dept. of Electr. Eng., Texas Univ., San Antonio, TX, USA
fDate :
30 May-1 June 2005
Abstract :
The matrix model and the total weighted square correlation (TWSC) measure for overloaded uplink multiple cell synchronous DS-CDMA systems in the presence of multipath are introduced. A composite Gram matrix approach is used in order to characterize the generalized WBE (Welch bound equality) sequences in extended multidimensional signal space. We have developed an algorithm that preserves the bandwidth of generalized WBE sequences from each cell in the multidimensional signal space associated with a multicellular system.
Keywords :
cellular radio; code division multiple access; correlation methods; matrix algebra; multidimensional signal processing; multipath channels; sequences; spread spectrum communication; Gram matrix; Welch bound equality sequences; matrix model; multicellular system; multidimensional signal space; multipath multibase synchronous DS-CDMA systems; multiple cell DS-CDMA system; total weighted square correlation; Base stations; Correlation; Electric variables measurement; Gaussian noise; Interference constraints; Iterative algorithms; Multiaccess communication; Multidimensional systems; Multiple access interference; Transmitters; GWBE; Total weighted squared correlaion; Welch Bound Equality sequences (WBE); generalized WBE; multibase CDMA; multipath; spreading sequence design;
Conference_Titel :
Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st
Print_ISBN :
0-7803-8887-9
DOI :
10.1109/VETECS.2005.1543325
