发明授权
- 专利标题: Wireless communication system with improved broadcast coverage
- 专利标题(中): 无线通信系统具有改进的广播覆盖
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申请号: US12480928申请日: 2009-06-09
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公开(公告)号: US08687617B2公开(公告)日: 2014-04-01
- 发明人: Avneesh Agrawal , Durga Prasad Malladi , Anastasios Stamoulis , Ashok Mantravadi , Ramaswamy Murali
- 申请人: Avneesh Agrawal , Durga Prasad Malladi , Anastasios Stamoulis , Ashok Mantravadi , Ramaswamy Murali
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 代理商 Larry J. Moskowitz
- 主分类号: H04B7/208
- IPC分类号: H04B7/208
摘要:
Techniques to transmit data with cyclic delay diversity and pilot staggering are described. For cyclic delay diversity, OFDM symbols having different cyclic delay durations are generated. The cyclic delay durations for the OFDM symbols may be selected to be time varying with respect to the cyclic delay durations for OFDM symbols transmitted by a neighboring base station. An FDM pilot is generated and multiplexed on multiple sets of subbands in different symbol periods. Waveforms for a second radio technology (e.g., W-CDMA) may be generated for data to be transmitted with this radio technology. The OFDM symbols are multiplexed onto time slots used for OFDM, and the waveforms for the second radio technology are multiplexed onto time slots used for this radio technology. One or multiple modulated signals may be generated based on the multiplexed OFDM symbols and waveforms. Each modulated signal is transmitted from a respective antenna.
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