Multiple band crossing frequency division multiplex connection (OFDMA) data sending and receiving method in the communication system the communication device which uses that

摘要

SolutionsThe communication device is offered. Reception module receives the signal which possesses specified signal bandwidth. The low-pass filter (LPF) filtering the signal, the filter you obtain the signal which was processed. The filtration bandwidth of LPF is wide sufficiently, the regular subcarrier frequency component of the signal makes the half protective subcarrier frequency component pass at least. The analog digital converter (ADC), the filter the signal which was processed is sampled due to sampling rate, the plural digital samples are obtained. Sampling rate exceeds the standard sampling rate which is defined in regard to the specified signal bandwidth of the signal. Fast Fourier transform (FFT) module executes fast Fourier transform with respect to specified score of the digital sample, obtains the sample where plural is converted. Specified score exceeds the standard score which is defined in regard to specified carrier bandwidth. The sub-carrier collector collects the data from the sample which is converted. Selective figure Figure 3