Abstract: A method for compensating Inphase-Quadrature (IQ) imbalance in a receiver includes: generating a gain compensation parameter, a first phase compensation parameter, and a second phase compensation parameter according to a first signal on the I path and a second signal on the Q path of the receiver; and performing compensation on the I path and the Q path according to the gain compensation parameter, the first and the second phase compensation parameters.

Abstract: The present invention discloses a decoding device. The decoding device includes a scaling unit for adjusting a received signal according to a scaling coefficient to generate a scaled signal; a quantizer coupled to the scaling unit for generating a quantized signal by quantizing the scaled signal; a soft decision decoder coupled to the quantizer for decoding the quantized signal to generate a decoded signal; and a scaling coefficient generating unit coupled to the scaling unit for generating the scaling coefficient according to a system information of the decoding device.

Abstract: A method for detecting inter-symbol interference (ISI) in an OFDM system includes the steps of computing a first correlation value representing the correlation between a plurality of first signals of a first symbol and a plurality of second signals of a second symbol previous to the first symbol, wherein the first and the second signals are both transmitted via the same sub-carriers; computing a second correlation value representing the correlation between the first signals and a plurality of third signals of a third symbol next to the first symbol, wherein the first and the third signals are both transmitted via the same sub-carriers; comparing the first correlation value with the second correlation value; and adjusting the timing of the boundary according to the comparison result.

Abstract: A method for detecting inter-carrier-symbol interference (ICSI) in an OFDM system includes the steps of computing a first correlation value representing the correlation between at least one of first signals of a first symbol and at least one of second signals of a second symbol previous to the first symbol, wherein the first signal is transmitted via a first sub-carrier and the second signal is transmitted via a second sub-carrier adjacent to the first sub-carrier; computing a second correlation value representing the correlation between the at least one first signal and at least one of third signals of a third symbol next to the first symbol, wherein the signal is transmitted via the first sub-carrier and the third signal is transmitted via the second sub-carrier; comparing the first correlation value with the second correlation value; and adjusting the timing of the boundary according to the comparison result.

Abstract: A boundary tracking method applied in an OFDM receiver includes generating a plurality of demodulated signal sets corresponding to part of sub-carriers of a packet according to different boundaries with different positions located at the packet, determining the most precise one of the boundaries according to a plurality of inter-symbol interference (ISI) values according to the demodulated signal sets, and calibrating a timing of a currently utilized boundary.

Abstract: A method for antenna diversity includes: determining a first strength of the first antenna according to a received signal received by the first antenna; receiving the guard interval of a first symbol or a second symbol or both using the second antenna and determining a second strength of the second antenna; and determining which one of the first and the second antennas to receive the useful duration of the second symbol according to the first and the second strengths.