Receiver for wireless communication network with extended range

Abstract From the Canadian patent

Techniques for detecting and demodulating a signal/transmission are described. Signal detection is performed in multiple stages using different types of signal processing, e.g. using time-domain correlation for a first stage frequency-domain processing for a second stage and time-domain processing for , a third stage. For the first stage products of symbols are generated for at least two different delays, correlation between the products for each delay and known values is performed, and correlation results for all delays are combined and used to declare the presence of a signal. For demodulation the , timing of input samples is adjusted to obtain timing-adjusted samples. A frequency …