Reduced rank noncoherent interference suppression for CDMA communications

Noncoherent receivers are used for frequency-selective fading channels where the estimation of channel is difficult. The channel estimation can be more cumbersome for asynchronous code division multiple access (A-CDMA) systems due to multiaccess interference. A noncoherent reduced rank receiver whic...

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Bibliographic Details
Main Authors: Koc, A.T., Ozdemir, O., Torlak, M.
Format: Conference Proceeding
Language:English
Subjects:
Applied sciences
Channel estimation
Detection, estimation, filtering, equalization, prediction
Detectors
Exact sciences and technology
Feedback
Filters
Frequency estimation
Frequency-selective fading channels
Information, signal and communications theory
Interference suppression
Mean square error methods
Multiaccess communication
Multipath channels
Radiocommunications
Signal and communications theory
Signal, noise
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Transmitters. Receivers
Online Access:Request full text
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Summary:Noncoherent receivers are used for frequency-selective fading channels where the estimation of channel is difficult. The channel estimation can be more cumbersome for asynchronous code division multiple access (A-CDMA) systems due to multiaccess interference. A noncoherent reduced rank receiver which has less complexity as compared to noncoherent full rank linear minimum mean square error (MMSE) receiver is proposed for A-CDMA systems. The receiver for multipath channels consists of a reduced rank filter and a decision feedback differential detector (DF-DD) for each path. A generic bit error rate formula is provided for noncoherent reduced rank multistage decision feedback differential detection scheme.
DOI:10.1109/ACSSC.2004.1399272