Spread spectrum demodulation unit

Details Spread spectrum demodulation unit Spread spectrum demodulation unit

H - Electricity

04

B

H04B 1/69 (2006.01) H04B 1/707 (2006.01) H04B 7/005 (2006.01)

Patent

CA 2205352

An improved demodulation system assigns a reception timing for demodulation of a multi-path component of a transmission signal in accordance with an estimated rate of change of a correlation level of the multi-path component. An averaging circuit is provided for determining an average correlation level of a multi-path component in accordance with an averaging interval, wherein the averaging interval is determined in accordance with an estimated rate of change in the correlation level of a multi-path component. A moving speed display unit is provided for determining and displaying a relative moving speed between the transmitter and a receiver in accordance with an estimated rate of change of the correlation level of a multi-path component. A correlation level prediction circuit is provided for predicting the correlation level of a multi-path component in accordance with past measurements of the correlation level. A phase assignment circuit determines a reception timing assignment in accordance with the predicted correlation level for demodulating a multi-path component of a transmission signal by a demodulation circuit.

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