发明名称 |
EFFICIENT EMPLOYMENT OF DIGITAL UPSAMPLING USING IFFT IN OFDM SYSTEMS FOR SIMPLER ANALOG FILTERING |
摘要 |
<p>Systems and methods are provided for transmitting OFDM information via IFFT up-sampling components that transmit data at a higher sampling rate than conventional systems to simplify filter requirements and mitigate leakage between symbols. In one embodiment, an NL point IFFT is performed on a zero inserted set of frequency domain symbols. Ih another embodiment, the NL point IFFT is further optimized by exploiting the fact that (N-I) L of the frequency domain symbols are zero. This enables an embodiment that consists of a pre-processor that multiplies the input samples by complex phase factors, followed by L point IFFTs.</p> |
申请公布号 |
SG160382(A1) |
申请公布日期 |
2010.04.29 |
申请号 |
SG20100016186 |
申请日期 |
2006.03.10 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
KRISHNAMOORTHI, RAGHURAMAN;LING, FUYUN;VIJAYAN, RAJIV |
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