Patent ID: 7551666
Filing Date: 2009-06-23
Classification: H04B

Abstract:
1. A wireless communications system for transmitting/receiving a first wireless signal from a first wireless communications device and a second wireless signal from a second wireless communications device, the first and second wireless signals having different frequency bands from each other, wherein: the first wireless communications device includes: the signal demodulated by the first demodulation digital circuit has a center frequency of fi [Hz]; the second wireless communications device includes: a sampling frequency used in the first sampler and that used in the second sampler are the same sampling frequency fs [Hz]; the sampling frequency fs [Hz] is set to a value that is an even-number multiple of a wireless symbol transmission rate such that oversampling is done in the first sampler and undersampling is done in the second sampler; and the center frequency fi [Hz] is ½ to 1 times a frequency corresponding to a bandwidth of the first and second wireless signals and is ½