PEAK-TO-AVERAGE POWER RATIO MANAGEMENT FOR MULTI-CARRIER MODULATION IN WIRELESS COMMUNICATION SYSTEMS

摘要

Techniques for managing peak-to-average power ratio (PAPR) for multi-carriermodulation in wireless communication systems. Different terminals in amultiple-access system may have different required transmit powers. The numberof carriers to allocate to each terminal is made dependent on its requiredtransmit power. Terminals with higher required transmit powers may beallocated fewer carriers (associated with smaller PAPR) to allow the poweramplifier to operate at higher power levels. Terminals with lower requiredtransmit powers may be allocated more carriers (associated with higher PAPR)since the power amplifier is operated at lower power levels. The specificcarriers to assign to the terminals may also be determined by their transmitpower levels to reduce out-of-band emissions. Terminals with higher requiredtransmit powers may be assigned with carriers near the middle of the operatingband, and terminals with lower required transmit powers may be assigned withcarriers near the band edges.