Title :
Signature-interleaved DS CDMA: controlling odd correlation peaks
Author :
Dudkov, Alexey ; Ipatov, Valery P.
Author_Institution :
Dept. of Inf. Technol., Turku Univ.
Abstract :
Users´ asynchronism and multipath propagation are among the most problematic issues in designing direct sequence code division multiple access (DS CDMA) systems. In this paper a system employing interleaved multiple signatures per user to mitigate the damaging effects of these factors is described and studied. It is demonstrated that interleaving along with an appropriate selection of users´ signature multitudes drastically lowers the level of data-modulation-related peaks of multiple access interference
Keywords :
code division multiple access; correlation theory; modulation; multipath channels; radiofrequency interference; radiowave propagation; spread spectrum communication; DS-CDMA system; data-modulation-related peaks; direct sequence code division multiple access; interleaved multiple signature; multipath propagation; multiple access interference; odd correlation control; user asynchronism; Algorithm design and analysis; Code division multiplexing; Control systems; Direct-sequence code-division multiple access; Interleaved codes; Multiaccess communication; Multiple access interference; Quality of service; Signal design; Signal processing; DS CDMA; interleaving; multipath; multiple access interference; signature;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on
Conference_Location :
Berlin
Print_ISBN :
9.7838007291e+012
DOI :
10.1109/PIMRC.2005.1651899
