초록 ▼

A RAKE receiver which is employed in a direct sequence spread spectrum communication system, and which can effectively receive multipath signals. A path searcher measures the amplitude of each path, selects N paths with larger amplitudes in descending order of magnitude, where N is the number of des

A RAKE receiver which is employed in a direct sequence spread spectrum communication system, and which can effectively receive multipath signals. A path searcher measures the amplitude of each path, selects N paths with larger amplitudes in descending order of magnitude, where N is the number of despreaders, and assigns the despreaders to the selected paths to despread the signals of the paths. This assignment of the despreaders to the paths is carried out such that a path with a large amplitude and a path with a small amplitude are assigned to adjacent despreaders and are input to the same pre-detection combiner. The outputs of the despreaders are combined by the pre-detection combiners, and detected by detectors whose outputs are RAKE combined by a post-detection combiner.

대표청구항 ▼

[ What is claimed is:] [1.] A RAKE receiver comprising:a plurality of despreaders, each of which corresponds to a path among multipaths of a channel, and despreads a received signal of the path;a plurality of pre-detection combiners, each of which combines at least two signals delivered from said de

[ What is claimed is:] [1.] A RAKE receiver comprising:a plurality of despreaders, each of which corresponds to a path among multipaths of a channel, and despreads a received signal of the path;a plurality of pre-detection combiners, each of which combines at least two signals delivered from said despreaders;a plurality of detectors for detecting outputs of said pre-detection combiners or outputs of said despreaders;a post-detection combiner for combining signals output from said detectors; anda path searcher for identifying said multipaths and for assigning said despreaders to the paths.