Patent ID: 7512860
Filing Date: 2009-03-31
Classification: H04L

Abstract:
1. A receiving apparatus in a communication system in which when an encoded transmit data cannot be decoded correctly on a receiving side, the transmit data is retransmitted from a transmitting side, comprising: receiving portion for receiving retransmission data; combiner for combining stored data, which has been generated based upon data already received, and newly received data and outputting the combined data; average-value calculation portion for calculating an average value of the amplitude of the combined data; receiving portion for receiving an encoding rate of the transmit data that is sent from the transmitting side on a control channel; deciding portion for deciding a range of quantization levels of the combined data by multiplying the average value of the amplitude of the combined data by a predetermined magnification m that conforms to the encoding rate; quantizing means for quantizing the combined data based upon the range of quantization levels and number of quantization bits; decoder for applying decoding processing to the quantized data; notifying portion for notifying the transmitting side of whether decoding could be performed correctly; and storing portion for storing the combined data as the stored data when decoding cannot be performed correctly.