| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique of flexibly supporting different band widths in a radio communication system. <P>SOLUTION: A configurable operating bandwidth using a fixed design bandwidth and variable guard bands is supported. Values for various parameters such as a fast Fourier transform size, a cyclic prefix length, and a sample rate are selected based on the design bandwidth. The design bandwidth is associated with a total of K subcarriers. Different operating bandwidths are supported by selecting different numbers of usable subcarriers. A transmitter and a receiver perform processing for a transmission using the same FFT size, cyclic prefix length, and sample rate regardless of the selected operating bandwidth. The system uses different operating bandwidths and/or different parameter values (e.g., FFT sizes) for different portions of transmission (e.g., a main body and a preamble of the transmission). <P>COPYRIGHT: (C)2012,JPO&INPIT |
