Method and device for managing multipath signals

A multi-path and signal technology, applied in communication between multiple stations, diversity/multi-antenna system, space transmit diversity, etc., can solve problems such as system thrashing, processor overload, and large system resource occupation

Inactive Publication Date: 2005-08-10
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The downside of system thrashing is that it takes a lot of system resources, such as processor operations
During system thrashing, the processor may be overloaded by the constant assignment and reassignment of multiple demodulators to di

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  • Method and device for managing multipath signals
  • Method and device for managing multipath signals
  • Method and device for managing multipath signals

Examples

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Embodiment Construction

[0042] The preferred embodiment of the invention will now be described in detail, examples of which are shown in the accompanying drawings. While the invention has been described in connection with preferred embodiments, it is evident that no attempt is made to limit the scope of the invention to these embodiments. On the contrary, the invention is intended to cover alternatives, modifications and equivalents, which may be included within the spirit and scope of the invention. Also, in the following detailed description, numerous specific details are set forth to facilitate a deeper understanding. However, those skilled in the art will obviously be able to implement these embodiments without relying on these details. Additionally, some well-known methods, procedures, components and circuits have not been described in detail to avoid unnecessarily obscuring the present disclosure.

[0043] Some parts of the following detailed description, such as the description of some proce...

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Abstract

A method for managing multipath signals to be demodulated by a receiver withmultiple demodulators. The method includes a series of steps, including receiving themultipath signals at a wireless communication receiver device, finding the multipath signalshaving sufficient signal strength for demodulation, and measuring an arrival time of one ofthe multipath signals. In one embodiment, the present invention also recites measuring asignal-to-noise ratio (SNR) level of one of the multipath signals, updating a multipath listwith the arrival time and the signal-to-noise ratio if the multipath signal is identified basedupon the arrival time with one of the multipath signals existing in the multipath list, andidentifying newly-found multipath signals and evaluating one of the newly-found multipathsignals based on the signal-to-noise ratio for categorization into one of a plurality of states.Additionally, in one embodiment of the present invention, the present method includesevaluating one of the existing multipath signals based on the signal-to-noise ratio for movingthe multipath signal from one to another of a plurality of states, selectively providing one ofthe multipath signals for a demodulation operation based upon its state, selectively rejectingone of the multipath signals from the multipath list based on the signal-to-noise ratio, andrepeating several of the above mentioned operations to process all found multipath signals.

Description

technical field [0001] The present invention relates to the field of digital communications, more precisely to a device and a method for managing multipath signals to be demodulated by a receiver with a demultiplexer. This specification discusses methods and apparatus for managing multipath signals for a receiver with a demultiplexer. Background technique [0002] Today, wireless telephony (such as the use of mobile phones) has become a widely used means of communication. Variable rate communication systems, such as Code Division Multiple Access (CDMA) spread spectrum systems, have become the most commonly used wireless communication technologies. Due to increasing communication demands and limited resources, there is a need to improve the capacity, fidelity and performance of communication systems. [0003] Referring to prior art Figure 1A, there is shown multipath signal propagation between a conventional base station and a mobile telephone. Conventional base station 10...

Claims

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Application Information

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IPC IPC(8): H04B1/711H04B1/707H04B7/08H04B7/26
CPCH04B1/7117H04B1/711
Inventor G·容L·阿尔达茨D·希尔J·C·刘G·卢克
Owner NXP BV
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