Power efficient paging for mobile users in a terrestrial and sat

Details Power efficient paging for mobile users in a terrestrial and sat Power efficient paging for mobile users in a terrestrial and sat

1997-01-22

1999-06-08

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

455436, 455437, G08B 522

Patent

active

059107774

ABSTRACT:
A method of paging assigns a unique digital address to mobile stations with each unique digital address being mapped into an orthogonal signal set which is then transmitted to all mobile stations. Each mobile station then correlates a received orthogonal signal function against an orthogonal function corresponding to its address. More particularly, each orthogonal signal set comprises a binary orthogonal signal set such as a set of Rademacher-Walsh functions. Other well known orthogonal function sets can be employed. For example, an mbit address can be partitioned into g binary sequences and each sequence is then uniquely mapped into one of 2.sup.m/g orthogonal functions.

REFERENCES:
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5497395 (1996-03-01), Jou
M. J. E. Golay "An Approach to Multiple Satellite Communications Through The Use of Network Synchronized Orthogonal Signals", Apr. 1965, pp. 107-114, Defense Documentation Center, Document No. AD465789.
Shlomo Rakib "Inventor of S-CDMA Rises Above Noise", Aug. 1996, p. 18, CED: Communications Engineering & Design.
F.J. MacWilliams, et al. "The Theory of Error-Correcting Codes", Ch. 2 .sctn.3, pp. 45-49 (no date).

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