Patent ID: 7746958

Claim:
A receiver for a wire-free communication system for reception of a received signal which is modulated using a digital modulation method, comprising: a first frequency conversion device configured to produce a frequency-converted received signal by conversion of the received signal to an intermediate frequency; a pre-filter configured to produce a filtered received signal from the frequency-converted received signal such that the received signal is band-limited; an analogue/digital converter configured to produce a binary received signal from the filtered frequency-converted received signal by comparison of the filtered received signal with a level threshold; a phase reconstruction device configured to produce a phase-reconstructed received signal by reproduction of the phase of the received signal from the time intervals between zero crossings of the binary received signal; a mapping device configured to produce a bit sequence by mapping symbols from the phase-reconstructed received signal onto the bit sequence using the digital modulation; and a second frequency conversion device arranged between the analogue/digital converter and the mapping device, and configured to convert the binary received signal to baseband.