Low Complexity Asynchronous DS-CDMA Detectors
1996 (English)In: IEEE Transactions on Vehicular Technology ConferenceIEEE 46th Vehicular Technology Conference. 'Mobile Technology for the Human Race'., 1996, 1996, 559-563 p.Conference paper (Refereed)
Near-far resistant multiuser-detectors for an asynchronous direct-sequence code-division multiple access (DS-CDMA) system, which do not need the code-matched filter outputs from all users are presented. Two complex-valued, discrete-time vector models for the system are formulated. Detectors for both models, that work on blocks of data of M symbols are considered. The problem of estimation of the bits is posed in a least squares sense and as a minimum mean squared error problem. The performance of the detection algorithms is investigated by computing the BER (bit error rate) on simulated data. Comparisons with traditional detectors is also carried out. It is shown that detectors based on the compact vector model performs slightly worse thandetectors based on the more complex vector model.
Place, publisher, year, edition, pages
1996. 559-563 p.
AWGN, Additive white noise, Bit error rate, Detectors, Filters, Gaussian noise, Least squares approximation, Multiaccess communication, Propagation delay, Signal processing
IdentifiersURN: urn:nbn:se:kth:diva-92588DOI: 10.1109/VETEC.1996.503510OAI: oai:DiVA.org:kth-92588DiVA: diva2:513856
IEEE 46th Vehicular Technology Conference. 'Mobile Technology for the Human Race'., 28 Apr-1 May 1996, Atlanta, GA
NR 201408052012-04-032012-04-032012-04-03Bibliographically approved