Title :
Optimization of the ambiguity function of binary sequences and their mismatched filters for use in CTDMA systems
Author :
Schotten, Hans Dieter ; Ruprecht, Jürg
Author_Institution :
Inst. fur Elektrische Nachrichtentech., Tech. Hochschule Aachen, Germany
Abstract :
For the application in a cellular common-code spread-spectrum multiple access system, referred to as code time division multiple access (CTDMA), the ambiguity function of the binary spreading sequence and its mismatched despreading filter is optimized. In cellular CTDMA systems, the user signals are first separated by a symbol-level TDMA scheme and then spread in a DS-CDMA fashion by a common (cell-specific) binary spreading sequence
Keywords :
binary sequences; cellular radio; code division multiple access; filtering theory; pseudonoise codes; spread spectrum communication; time division multiple access; DS-CDMA; ambiguity function; binary spreading sequence; cell specific spreading sequence; cellular CTDMA systems; cellular common-code spread-spectrum multiple access; code time division multiple access; mismatched despreading filter; symbol-level TDMA scheme; Binary sequences; Degradation; Design optimization; Doppler shift; Filters; Mobile communication; Multiaccess communication; Pareto optimization; Research and development; Telecommunications;
Conference_Titel :
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Conference_Location :
Whistler, BC
Print_ISBN :
0-7803-2453-6
DOI :
10.1109/ISIT.1995.531293
