FFT COLLECTION WINDOW POSITIONING USING UFDM SYMBOL TIME TRACKING INFORMATION
摘要
<p>A method for positioninga collection window for a Fourier transform function is disclosed. A first orthogonal frequency division multiplexing (OFDM) symbol and a second OFDM symbol are received. The first OFDM symbol comprises a plurality of frequency division multiplexed (FDM) symbols. The first OFDM symbol is characterized by at least two of the following: a delay spread, a first arriving path (FAP), or a last arriving path (LAP). A channel location is estimated from a channel impulse response. A point relative to the channel location is selected. A beginning of the collection window is positionedfor the second OFDM symbol at the selected point. Alternatively, apoint is selectedat a first location relative to the channel location using a first algorithm if a delay spread is less than a predetermined length. The selected point is chosen at a second location relative to the channel location using a second algorithm if the delay spread is greater than the predetermined length.</p>
申请公布号
WO2006099241(A1)
申请公布日期
2006.09.21
申请号
WO2006US08798
申请日期
2006.03.09
申请人
QUALCOMM INCORPORATED;VRCELJ, BOJAN;MANTRAVADI, ASHOK;LING, FUYUN;VIJAYAN, RAJIV;WANG, MICHAEL, MAO
发明人
VRCELJ, BOJAN;MANTRAVADI, ASHOK;LING, FUYUN;VIJAYAN, RAJIV;WANG, MICHAEL, MAO