Title :
New concatenated sequences for wireless indoor asynchronous DS-CDMA communications
Author :
Cacopardi, Saverio ; Frescura, Fabrizio ; Gambi, Marco ; Reali, Crianluca
Author_Institution :
Istituto di Elettronica, Perugia Univ., Italy
Abstract :
The performance of an indoor asynchronous DS-CDMA system was investigated. The analysis focuses on spreading sequences. In particular, we compare some known sequences, characterised by particular correlation properties, with other sequences constructed by using a concatenation technique. The concatenation effect is to make the statistics of the values of the even and the odd correlation functions similar and converging towards low values, thus keeping low the multi-user interference and obtaining good BER performance
Keywords :
binary sequences; code division multiple access; coding errors; concatenated codes; correlation methods; error statistics; indoor radio; land mobile radio; multipath channels; pseudonoise codes; radiofrequency interference; spread spectrum communication; BER performance; channel model; concatenated sequences; concatenation effect; concatenation technique; convergence; correlation properties; even correlation functions; multipath channel; multiuser interference; odd correlation functions; radiowave propagation; spreading sequences; statistics; system performance; wireless indoor asynchronous DS-CDMA communications; Bandwidth; Base stations; Concatenated codes; Indoor radio communication; Multiaccess communication; Quadrature phase shift keying; Receivers; Statistics; System performance; Utility programs;
Conference_Titel :
Communications, 1996. ICC '96, Conference Record, Converging Technologies for Tomorrow's Applications. 1996 IEEE International Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-3250-4
DOI :
10.1109/ICC.1996.540246
