Rake receiving system with fingers selectively participating rak

Details Rake receiving system with fingers selectively participating rak Rake receiving system with fingers selectively participating rak

1998-06-15

2000-12-05

Chin, Stephen

Pulse or digital communications

Receivers

Interference or noise reduction

375130, 375136, 375147, 375150, 375316, 370335, 370342, H04B 710

Patent

active

061576875

ABSTRACT:
A Rake receiving system distributes parts of a receiving signal to fingers for producing weighted parts, and supplies the parts of receiving signal to a pass controlling sub-system; the pass controlling sub-system checks the parts to see whether or not the correlative electric power of each part is equivalent to an average noise power, and each finger calculates a ratio of electric power between an expected receiving signal and non-expected receiving signal; when the correlative electric power is equivalent to a noise power, the associated weighted part is deleted from the Rake synthesis; when the ratio is lower than a threshold, the associated weighted part is also deleted from the Rake synthesis.

REFERENCES:
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patent: 5940429 (1999-08-01), Lam et al.
patent: 5953382 (1999-09-01), Asano et al.
patent: 5974038 (1999-10-01), Shou et al.
patent: 6067293 (2000-05-01), Shoji
Andrew J. Viterbi, "CDMA Principles of Spread Spectrum Communication", Addison-Wesley Publishing Company, 1995, pp. 86-92.
H. Ando, et al., "Performance of RAKE and Space Diversity Using Multi-Pilot-Block Channel Estimation for DS-CDMA", Proceedings of Joint Assembly of the Institute of Electronics, Information and Communication Engineers, B-5-13, 1997, p. 400.
A. Higashi, et al., "Performance of Coherent RAKE Detection Using Interpolation on DS/CDMA", Technical Report of the Institute of Electronics, Information and Communication Engineers, A-P94-74, RCS94-98, (Oct. 1994), pp. 57-62.

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