Title :
Welch bound analysis on generic code division multiple access codes with interference free windows
Author :
Li, Xiangming ; Chen, Hsiao-Hwa ; Qian, Yi ; Rong, Bo ; Soleymani, Mohammad Reza
Author_Institution :
Sch. of Inf. & Electron. Eng., Beijing Inst. of Technol., Beijing
fDate :
4/1/2009 12:00:00 AM
Abstract :
Code-division multiple access (CDMA) technology has been applied to many wireless communication systems. CDMA system suffers from both multiple access interference (MAI) and inter-symbol interference (ISI) over a multipath channel. To suppress MAI and ISI, this paper proposes the spreading codes with interference free windows. In particular, we will develop several upper bounds on the efficiency of generalized spreading codes (for both unitary and complementary codes) in terms of the width of their interference free windows.
Keywords :
channel coding; code division multiple access; intersymbol interference; multipath channels; CDMA; Welch bound analysis; generalized spreading code; generic code division multiple access; inter symbol interference; interference free window; multipath channel; multiple access interference; wireless communication system; Autocorrelation; Delay systems; Interference constraints; Interference suppression; Intersymbol interference; Multiaccess communication; Multipath channels; Multiple access interference; Upper bound; Wireless communication; CDMA; Multiple access; Welch bound; complementary sequences; interference free window;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2009.070470
