| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for detecting and demodulating data transmission in a wireless communication system. SOLUTION: In one aspect, a decision-directed detector detects data transmissions in a received signal by utilizing received data symbols and received pilot symbols. The decision-directed detector may be designed to perform differential detection in a frequency domain or coherent detection in a time domain, and may be used with multi-carrier modulation (e.g., OFDM). In another aspect, an adaptive threshold is used to perform the detection of received data transmissions. A threshold may be determined for each data transmission hypothesized to have been received. The threshold may be computed, for example, based on the signal positive noise energy of the hypothesized data transmission. COPYRIGHT: (C)2010,JPO&INPIT
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