发明公开
EP1884096A2 ENHANCED FREQUENCY DIVISION MULTIPLE ACCESS FOR WIRELESS COMMUNICATION
有权
无线Komminikation频分多址
- 专利标题: ENHANCED FREQUENCY DIVISION MULTIPLE ACCESS FOR WIRELESS COMMUNICATION
- 专利标题(中): 无线Komminikation频分多址
-
申请号: EP06760244.1申请日: 2006-05-18
-
公开(公告)号: EP1884096A2公开(公告)日: 2008-02-06
- 发明人: PALANKI, Ravi , KHANDEKAR, Aamod
- 申请人: QUALCOMM INCORPORATED
- 申请人地址: 5775 Morehouse Drive San Diego, California 92121 US
- 专利权人: QUALCOMM INCORPORATED
- 当前专利权人: QUALCOMM INCORPORATED
- 当前专利权人地址: 5775 Morehouse Drive San Diego, California 92121 US
- 代理机构: Dunlop, Hugh Christopher
- 优先权: US683290P 20050520; US691870P 20050616; US710418P 20050822
- 国际公布: WO2006127544 20061130
- 主分类号: H04L27/26
- IPC分类号: H04L27/26
摘要:
Enhanced frequency division multiple access (EFDMA) is a multiplexing scheme that sends modulation symbols in the time domain and achieves a lower PAPR than OFDM. An EFDMA symbol occupies multiple subband groups that are spaced apart in a frequency band, with each subband group containing multiple adjacent subbands. To generate an EFDMA symbol, multiple modulation symbols are mapped onto a first sequence of symbols. A transform (e.g., a DFT) is performed on the first sequence to obtain a second sequence of values. The values in the second sequence corresponding to the subbands used for the EFDMA symbol are retained, and the remaining values are zeroed out to obtain a third sequence of values. An inverse transform (e.g., an IDFT) is performed on the third sequence to obtain a fourth sequence of samples. A phase ramp may be applied on the fourth sequence, and a cyclic prefix is appended to form the EFDMA symbol.
公开/授权文献
信息查询