Patent ID: 9635620
Date: 2017-04-25
CPC Classifications: H04W

Claim:
1. A wireless communication apparatus comprising: at least one antenna configured to transmit a transmission signal including a plurality of radio signals in parallel, each of the plurality of radio signals having each of a plurality of frequency bands, the plurality of radio signals including a plurality of physical channels, each of the plurality of radio signals including at least one of the plurality of physical channels; a memory configured to store a plurality of coefficient values, each of the plurality of coefficient values being associated with each of a plurality of first factors and each of a plurality of second factors, each of the plurality of first factors being each of a plurality of identities among each set of scrambling codes used in each set of specific physical channels among the plurality of physical channels, each of the plurality of second factors being each set of transmission formats used in each set of specific physical channels among the plurality of physical channels; and a processor configured to: obtain, for each repeated combination taken from the plurality of physical channels, each of coefficient values from the stored plurality of coefficient values, and estimate an exponential of amplitude of the transmission signal based on the obtained coefficient values; wherein the processor is further configured to estimate the exponential of amplitude of the transmission signal further based on a plurality of gain factors and a correction factor, each of the plurality of gain factors being a gain factor of each of the plurality of physical channels, the correction factor being a ratio of a pair of amplitudes of reference channels that are included in the plurality of radio signals respectively.