Multiplex communications – Diagnostic testing – Determination of communication parameters
Patent
1996-02-14
1997-10-07
Marcelo, Melvin
Multiplex communications
Diagnostic testing
Determination of communication parameters
370335, 375200, 455 673, H04J 1302
Patent
active
056755813
ABSTRACT:
A method and apparatus for simulating signal interference within a communication system, such wireless or cellular communication systems. The communication system is preferably of a type in which code division multiple access (CDMA) spread spectrum communication signals are used. The method for simulating signal interference power received by a base station receiver includes estimating a first composite signal power corresponding to the sum of signal power transmitted by a first set of simulated users located in a first cell. An estimate is also made of a first normalized date rate for transmission of the composite signal. A first interference signal is then generated at a power level determined on the basis of the first composite signal power and normalized data rate. In a preferred implementation, the first interference signal power is adjusted in accordance with an average power fluctuation arising as a consequence of closed loop power control. Further, a second composite signal power is determined by estimating the sum of signal power transmitted by a second set of simulated users located outside of the first cell. A similar estimate is made of a second normalized data rate at which this signal power is transmitted by the second set of simulated users. This allows the generation of a second interference signal based on the second composite signal power and normalized data rate. Generation of the first interference signal will typically involve synthesis of electrical noise over a predetermined frequency band. The power of the electrical noise is then adjusted in accordance with the product of the first composite signal power and the first normalized data rate.
REFERENCES:
patent: 3806809 (1974-04-01), Firman
patent: 4317214 (1982-02-01), Attinello
patent: 5220680 (1993-06-01), Lee
patent: 5233628 (1993-08-01), Rappaport et al.
patent: 5596570 (1997-01-01), Soliman
Marcelo Melvin
Miller Russell B.
Ogrod Gregory D.
Qualcomm Incorporated
LandOfFree
Simulating user interference in a spread spectrum communication does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Simulating user interference in a spread spectrum communication , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simulating user interference in a spread spectrum communication will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2363084