Improvements in or relating to radio receivers

Details Improvements in or relating to radio receivers Improvements in or relating to radio receivers

H - Electricity

04

L

H04L 7/04 (2006.01) H04B 1/18 (2006.01) H04L 27/26 (2006.01) H04H 1/00 (2006.01)

Patent

CA 2209984

A receiver for detecting radio signals and for recovering digital data carried by the radio signal, the said radio signal being provided with the symbol timing of the sequence of symbols, the said receiver comprising a demodulator for demodulating the radio signal under coercion of a clock signal, which demodulator operates to generate frequency error data in dependence upon the demodulated radio signal in combination with the clock signal, and to generate timing error data in dependence upon the symbol timing in combination with the clock signal, and a numerically controllable dividing loop which operates to generate the clock signal in dependence upon error data provided by a numerical error generating filter in dependence upon the frequency and timing error data and a substantially fixed frequency reference signal, thereby providing the receiver with a means for recovering the said data without dependence upon a highly accurate reference oscillator.

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