Patent ID: 7526018

Claim:
A multi-standard transceiver for supporting a plurality of Time Division Duplexing (TDD) wireless communication standards, comprising: a Multi-Mode-modem (MMM) for selecting a transmission standard from the plurality of standards, and performing digital modulation/demodulation in a BaseBand (BB) according to the selected transmission standard, and selecting a transmission channel; a frequency synthesizing unit for variably adjusting a carrier frequency according to the transmission channel selected by the MMM, and outputting the carrier frequency; a transmission unit for receiving a digital modulated signal output from the MMM, converting the digital modulated signal into a BB analog modulated signal, low-pass-filtering the analog modulated signal with a bandwidth thereof variably adjusted according to the selected transmission standard, and up-converting the analog modulated signal into a Radio frequency (RF) modulated signal corresponding to the selected transmission channel, using the carrier frequency; a reception unit for down-converting a received RF modulated signal to a BB analog modulated signal using the carrier frequency, low-pass-filtering the analog modulated signal with a bandwidth thereof being variably adjusted according to the selected transmission standard, and converting the filtered, analog modulated signal into a digital modulated signal; a transmission/reception switch outputting the RF modulated signal, input from the transmission unit, to an antenna, or outputting the RF modulated signal, received from the antenna, to the reception unit; and an intelligent channel selection block for selecting a transmission channel based on received signal strengths and frequency offsets of channels; wherein the intelligent channel selection block comprises: a channel power measurement unit measuring received signal channel power on a network to which the transceiver belongs, and storing the received signal channel power as channel power data; a channel list storage unit arranging all channels available on a network to which the transceiver belongs, and storing the channel list; a channel selection data generation unit generating channel selection assign matrix (CSAM) which comprises of a sum of the differences between given received signal channel power and the power of interferers, including frequency offset parameter contribution with respect to each channel number for channel selection based on the signal channel power data and frequency offsets of channels in the channel list; and a channel selection unit selecting a highest priority channel from the channels of the channel list based on the channel selection assign matrix (CSAM) for channel selection.