Non-uniform quantization of log-likelihood ratios

A method of processing a signal by non-uniform quantization of log likelihood ratios is disclosed. In particular a disclosed method comprising the steps of: receiving (110) a plurality of bits (12); calculating (120) a log likelihood ratio (22), known as a LLR, for each bit; providing (130) a LLR value (22) for each bit based on the calculated LLR; quantizing (140) the LLR values into a plurality of quantization bins, each quantization bin having: a width representative of one or more LLR values; and an index value (32) having a bit length; and associating (150) each bit with the index value (32) that corresponds to its LLR value (22), wherein the width of each quantization bin is non-uniform. This compresses the LLR values (22) in a more efficient manner, requiring lower memory usage and/or lower bandwidth. A chip for a receiver and a communication system comprising one or more receivers are also disclosed.