Title :
On the total weighted square correlation minimization in multicellular synchronous DS-CDMA systems
Author :
Cotae, Paul ; Aguirre, Matt ; Lacatus, Catalin
Author_Institution :
Electr. Eng. Dept., Texas Univ., San Antonio, TX, USA
Abstract :
A definition of total weighted square correlation (TWSC) for an overloaded multicellular synchronous DS-CDMA system in the presence of multipath on the uplink is introduced. We assume the channel state information is known perfectly both at transmitter and receiver. The optimum solutions for minimizing TWSC are the orthogonal generalized WBE (Welch bound equality) spreading sequences. The design of such sequences in the context of cooperative multibase DS-CDMA systems under the TWSC criterion is presented.
Keywords :
binary sequences; cellular radio; code division multiple access; correlation theory; minimisation; multipath channels; spread spectrum communication; TWSC minimization; Welch bound equality; channel state information; cooperative multibase DS-CDMA systems; multipath channel; orthogonal generalized WBE; overloaded multicellular system; spreading sequences; synchronous DS-CDMA; total weighted square correlation; uplink; Base stations; Channel state information; Code division multiplexing; Collaboration; Collaborative work; Correlation; Design optimization; Interference constraints; Multiaccess communication; Transmitters;
Conference_Titel :
Information Theory Workshop, 2004. IEEE
Print_ISBN :
0-7803-8720-1
DOI :
10.1109/ITW.2004.1405271
