Method and apparatus for digital symbol detection using medium r

Details Method and apparatus for digital symbol detection using medium r Method and apparatus for digital symbol detection using medium r

1996-12-12

1999-03-30

Chin, Stephen

Pulse or digital communications

Receivers

Interference or noise reduction

375316, 375341, H04B 110

Patent

active

058898271

ABSTRACT:
According to the present invention, the effects of the transmission medium on transmitted information symbols are estimated separately from other effects, e.g., those associated with receive and transmit filters, using knowledge of the pulse shaping. The medium response estimate is then used to detect information symbols. Previously, receivers had used estimates of the composite channel to detect symbols. This, however, assumed uncorrelated noise, which is not always the case.

REFERENCES:
patent: 4539675 (1985-09-01), Fisher
patent: 4977580 (1990-12-01), McNicol
patent: 5166952 (1992-11-01), Omurg et al.
patent: 5253268 (1993-10-01), Omura et al.
patent: 5428602 (1995-06-01), Kemppainen
patent: 5533067 (1996-07-01), Jamal et al.
patent: 5768307 (1998-06-01), Schramm et al.
patent: 5796776 (1998-08-01), Lomp et al.
patent: 5799010 (1998-08-01), Lomp et al.
International Search Report re PCT/US97/21633 Date of mailing of search report: 1 Apr. 1998.
Torlak et al.: "An Improved Signature Waveform Estimation Approach In Synchronous CDMA Systems", 1996 IEEE 46.sup.th Vehicular Conference, vol. 1, pp. 569-573 (28 Apr. 1996-1 May 1996).
Schell S. V. et al.: "Improved Performance of Blind Equalization Using Prior Knowledge of Transmitter Filter", Proceedings of the Military Communications Conference ( MILCOM), pp. 128-132 (Oct. 2-5, 1994), vol. 1 of 3 (2 Oct. 1994).
Y. Wan et al., "A Fractionally-Spaced Maximun-Likelihood Sequence Estimation Receiver in a Multipath Fading Environment", ICASSP, vol. 4, pp. IV689-IV692 (1992).
W. H. Sheen et al., "MLSE Equalization and Decoding for Multipath-Fading Channels", IEEE Trans. Commun., vol. 39, vol. 39, No. 10, pp. 1455-1464 (Oct. 1991).
K. Hamied et al., "A Fractionally Spaced MLSE Receiver", ICC, pp. 7-11 (1995).
G. M. Vachula et al., "On Optimal Detection of Band-Limited PAM Signals with Excess Bandwidth", IEEE Trans. Commun. vol. 29, No. 6, pp. 886-890 (Jun. 1981).
K. Balachandran et al., "Receive Filters for Bandlimited Intersymbol Interference Channels", Conf. on Info. Sciences and Systems (CISS), 5 pages (Mar. 1996).
H. Meyr et al., "On Sampling Rate, Analog Prefiltering, and Sufficient Statistics for Digital Receivers", IEEE Trans. Commun. vol. 542, No. 12, pp. 3208-3214 (Dec. 1994).
G. E. Bottomley, "Adaptive MLSE Equalization Forms for Wireless Communications", Fifth Virginia Tech Symposium on Wireless Communications, (May 31-Jun. 2, 1995) 12 pages.

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