Receiving apparatus and receiving method

Abstract

The present invention provides a receiving apparatus and method in which frequency of calculation such as weighting multiplication and memory capacity of a frame buffer can be reduced. To this end, reference phase information and data are separated by a reference phase inverse spreading unit () and a data portion inverse spreading unit (), respectively. A weighting coefficient calculating unit () calculates weighting coefficients based on SNR values as transmission line information from an SNR calculating unit () and sends calculated weighting coefficients to a multiplier (), where phase correction values based on the reference phase information are multiplied by the weighting coefficients to be correction coefficients. A multiplier () multiplies reception data from the data portion inverse speading unit () by the correction coefficients, and output data from the multiplier () is restricted in bit width by the bit width restricting unit () The output data which is restricted in bit width from a coherent receiving unit () and that of a coherent receiving unit () are added by an adder (), and the output data from the adder () is sent to a frame buffer () to be stored. Then, the output data from the frame buffer () is sent to a soft decision input error correcting unit ().