Patent ID: 6278724
Filing Date: 2001-08-21
Classification: H04B

Abstract:
A signal reception apparatus for receiving spread spectrum signals, which alternately include pilot symbol blocks containing pilot symbols and information symbol blocks containing information symbols, the signal reception apparatus comprising:a matched filter for despreading the spread spectrum analog signals received through multiple paths;a multi-path selector for selecting paths from the multiple paths based on signal powers of despread analog signals output from the matched filter;a phase corrector for compensating fading effect of the despread analog signals received through the paths selected by the multi-path selector, wherein the phase corrector includes:an analog-to-digital converter for converting the despread analog signals received through the selected paths into digital signals;a memory for storing the digital signals output from the analog-to-digital converter and outputting the digital signals after a prescribed length of time;a plurality of phase error calculators, each for calculating analog phase errors of the pilot symbol blocks contained in the despread analog signal received through the selected path;a plurality of phase correction vector generators, each corresponding with one of the plurality of phase error calculators and generating an analog phase correction vector by calculating an average of the analog phase errors of two successive pilot symbol blocks; anda phase error corrector having a plurality of multipliers configured to multiply the analog phase correction vectors output from the phase correction vector generators by the digital signals output from the memory; anda rake combiner for receiving fading-compensated analog signals output from the phase corrector and combining the fading-compensated analog signals at a synchronized timing.