Patent ID: 6067315
Filing Date: 2000-05-23
Classification: H04B

Abstract:
In a Direct Sequence Code Division Multiple Access System (DS-CDMA) having a receiver performing non-coherent detection, a method for estimating received power of a received signal, said method comprising the following steps:a) correlating a coded symbol in said received signal received in said receiver against an alphabet of allowed symbols and generating channel complex correlation values for each possible value of the received symbol, where possible values are determined by the symbol alphabet;b) buffering each of the said channel complex correlation values;c) detecting the received symbols and selecting from the alphabet the symbol most likely received at the receiver;d) retrieving the complex correlation value corresponding to the selected symbol, wherein the retrieved correlation value forms a channel complex amplitude of the received symbol; ande) repeating the above steps for m times, and coherently averaging over m received code symbols the retrieved channel complex amplitudes to form a power estimate of a signal power received in a receiver.