发明申请
- 专利标题: PEAK-TO-AVERAGE POWER RATIO MANAGEMENT FOR MULTI-CARRIER MODULATION IN WIRELESS COMMUNICATION SYSTEMS
- 专利标题(中): 无线通信系统中多载波调制的平均功率比率管理
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申请号: US12170560申请日: 2008-07-10
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公开(公告)号: US20090040975A1公开(公告)日: 2009-02-12
- 发明人: Rajiv Vijayan , Avneesh Agrawal , Sanjay Jha
- 申请人: Rajiv Vijayan , Avneesh Agrawal , Sanjay Jha
- 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
- 主分类号: H04W4/00
- IPC分类号: H04W4/00
摘要:
Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.