Title :
Chip waveform selection in asynchronous DS-CDMA systems with interference suppression
Author :
Wong, Tan F. ; Lehnert, James S. ; Lok, Tat M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
In this work, the problem of chip waveform selection in asynchronous DS-CDMA systems with a decentralized receiving structure is investigated. The receiving structure is capable of suppressing multiple access interference (MAI). Aperiodic random signature sequences are employed in the DS-CDMA system. Performance bounds based on the signal-to-noise ratio of the decision statistic provided by the receiver are obtained. Using the bounds as performance measures, the use of different chip waveforms in DS-CDMA systems with the proposed receiver is examined
Keywords :
code division multiple access; interference suppression; land mobile radio; radio receivers; radiofrequency interference; spread spectrum communication; waveform analysis; DS-CDMA; aperiodic random signature sequences; asynchronous DS-CDMA systems; chip waveform selection; decentralized receiving structure; decision statistic; interference suppression; multiple access interference; performance bounds; signal-to-noise ratio; Correlators; Interference suppression; Multiaccess communication; Multiple access interference; Pressing; Random sequences; Random variables; Semiconductor device measurement; Signal to noise ratio; Statistics;
Conference_Titel :
Universal Personal Communications Record, 1997. Conference Record., 1997 IEEE 6th International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-3777-8
DOI :
10.1109/ICUPC.1997.625545
