Title :
Fractionally spaced decision feedback joint detection for multitone CDMA systems
Author :
Vandendorpe, L. ; van de Wiel, O.
Author_Institution :
Telecommun. & Remote Sensing Lab., Katholieke Univ., Leuven, Belgium
fDate :
8/1/1997 12:00:00 AM
Abstract :
We consider a fractionally spaced decision feedback joint detector (FS-DFJD) for multitone code division multiple access (CDMA) systems. We first derive the structure of the receiver for an minimum mean-squared error (MMSE) criterion. Then we investigate the bit-error rate (BER) performance achieved by this detector for binary phase-shift keying (BPSK) modulation in steady-state conditions. We consider an asynchronous scenario where the signal of each user propagates over a two-path channel. The resistance of the detector against timing errors is studied, and the resistance against a near-far scenario is also demonstrated
Keywords :
code division multiple access; coding errors; error statistics; feedback; multipath channels; phase shift keying; receivers; signal detection; BER performance; BPSK modulation; MMSE criterion; asynchronous scenario; binary phase shift keying; bit error rate performance; code division multiple access; fractionally spaced decision feedback joint detection; minimum mean squared error; multitone CDMA systems; near-far scenario; receiver structure; steady-state conditions; timing errors; two-path channel propagation; Binary phase shift keying; Bit error rate; Detectors; Feedback; Multiaccess communication; Phase detection; Phase modulation; Phase shift keying; Steady-state; Timing;
Journal_Title :
Communications, IEEE Transactions on
