METHOD FOR SELECTING ADAPTIVE FREQUENCY BASEBAND OF WALSH CODES, ADAPTIVE FREQUENCY SELECTIVE SPREADER USING THE SAME AND APPARATUS FOR TRANSMITTING AND RECEIVING USING THE SAME

摘要

A method for selecting the frequency baseband of a Walsh code, an adaptive frequency selective spreader and a transceiver using the same are provided to obtain the processing gain of the Walsh code technique efficiently. A counter(2171) outputs a counter bit. An adaptive frequency baseband selector(2172) selects a desired frequency band by receiving a data bit, a frequency selecting control bit and an offset input bit. A gray indexing unit(2173) gray-indexes a frequency selecting control bit and a data bit. A logical operating unit(2179) performs the logical operation for the counter bit and output bits of the gray indexing unit.