Patent ID: 7912147

Claim:
A method comprising: receiving, at a relay system, an input radio frequency (RF) signal from a channel in a first interval; recovering, using the relay system, from the input signal a stream Y r of N-PSK constellation points, wherein N is greater than one, wherein the stream Y r corresponds to a stream X s1 of N-PSK constellation points transmitted onto the channel by a source system using N-PSK modulation; performing, using the relay system, nested lattice quantization on the stream Y r to generate a quantization value W; performing, using the relay system, joint source-channel encoding on the quantization value W to obtain encoded data, wherein a channel code is used for both compression and forward error protection; converting, using the relay system, the encoded data into a stream X r of N-PSK constellation points; generating, using the relay system, an output signal, for transmission to a destination system in a second interval, based on the stream X r of N-PSK constellation points.