Peak to average power ratio suppression

摘要

A transmitter comprises a first peak-to-average-power ratio (PAPR) suppression circuit, a second peak-to-average-power ratio (PAPR) suppression circuit, and a first modulator. The first PAPR suppression circuit may receive a first sequence of time-domain symbols to be transmitted, alter the first sequence based on each of a plurality of symbol ordering and/or inversion descriptors to generate a corresponding plurality of second sequences of time-domain symbols, measure a PAPR corresponding to each of the second sequences, select one of the plurality of symbol ordering and/or inversion descriptors based on the measurement of PAPR, and convey the selected one of the symbol ordering and/or inversion descriptors to the second PAPR suppression circuit. The second PAPR suppression circuit may receive the first sequence of time-domain symbols to be transmitted, and alter the first sequence based on the selected one of the symbol ordering and/or inversion descriptors to generate a reordered and/or inverted symbol sequence.

主权项

1. A system comprising:
a first peak-to-average-power ratio (PAPR) suppression circuit, a second peak-to-average-power ratio (PAPR) suppression circuit, and a first modulator, wherein:
said first PAPR suppression circuit is operable to:
receive a first sequence of time-domain symbols to be transmitted;alter said first sequence based on each of a plurality of symbol ordering and/or inversion descriptors to generate a corresponding plurality of second sequences of time-domain symbols;measure a PAPR corresponding to each of said second sequences;select one of said plurality of symbol ordering and/or inversion descriptors based on said measurement of PAPR; andconvey said selected one of said symbol ordering and/or inversion descriptors to said second PAPR suppression circuit; andsaid second PAPR suppression circuit is operable to:
receive said first sequence of time-domain symbols to be transmitted; andalter said first sequence based on said selected one of said symbol ordering and/or inversion descriptors to generate a reordered and/or inverted symbol sequence; andsaid first modulator is operable to:
modulate said reordered and/or inverted sequence onto one or more carriers.