Pulse or digital communications – Repeaters – Testing
Patent
1997-08-14
1999-08-31
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
H04B 169
Patent
active
059463457
ABSTRACT:
A receiver device (703) downspreads signals from a band spreading signal, which generates downspread symbol sequences (803). A vector generator (704) generate symbol vectors (805) which include a symbol from each downspread symbol sequence (803). An auxiliary receiver (705) detects symbol vectors (805) in a first window (809) with the length of one symbol time. The auxiliary receiver (705) generates provisional estimates of the symbol vectors (805) with the help of a device with a first window algorithm (811). A delaying module (706) delays the symbol vectors (805) from the vector generator (704) by one symbol time before they reach a main receiver (707). The main receiver (707) detects in a second window (806) the symbol vectors (805) with the length of one symbol time. The main receiver (707) uses a device with a second window algorithm (808) in order to estimate the received symbol vectors (805) with reference taken to the previously estimated symbol vectors in the main receiver (705) and the provisional estimates of the symbol vectors (805) from the auxiliary receiver (705). A component generator (710) divides up the estimated symbol vectors (807) from the main receiver into separate components (815).
REFERENCES:
patent: 5371760 (1994-12-01), Allen et al.
patent: 5717403 (1998-02-01), Nelson et al.
S.S.H. Wijayasuriya, et al., "Sliding Window Decorrelating Algorithm for DS-CDMA Receivers", Electronic Letters, vol. 28, No. 17, Aug. 1992, pp. 1596-1598.
S.S.H. Wijayasuriya, et al., "RAKE Decorrelation as an Alternative to Rapid Power Control in DS-CDMA Mobile Radio", Proceedings 43rd Vehicular Technical Conference, New Jersey, 1993, pp. 368-371.
S.S.H. Wijayasuriya, et al. "A Near-Far Resistant Algorithm to Combat Effects of Fast Fading in Multi-User DS-CDMA Systems", Proceedings 3rd IEEE International Symposium on Personal, Indoor and Mobile Radio Communication, Boston, Oct. 1992, pp. 645-649.
John G. Proakis, Digital Communications, McGraw-Hill, Inc., 1995, pp. 802-804.
Ewerbring Lars-Magnus
Karlsson Jonas
Teder Paul
Chin Stephen
Jiang Lenny
Telefonktiebolaget LM Ericsson
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