Reduction of clipping in a multicarrier transmitte

专利名称：Reduction of clipping in a multicarrier

transmitter

发明人：Moss, Peter Neil c/o British Broadcasting

Corp.

申请号：EP00310571.5申请日：20001129公开号：EP1104140A3公开日：20040114

专利附图：

摘要：In an OFDM transmitter, the input signal is modified in several different ways bysign switches (22) operating on sub-bands generated by a splitter (20). An inverse fast

Fourier transform circuit (14) generates an output for each of all the possible types ofmodification producing a plurality of candidate signals. The signal of best quality isselected by subjecting the candidate signals to processing in a model () representingthe transmitter amplifier (16), and estimating the candidate signal of best qualitydetermined by a clip energy estimator (58) and/or a low-level estimator (60). A controlcircuit () then causes the transmitter to transmit the candidate signal of best qualitytogether with signalling information indicating the corresponding setting of the signswitches (22).

申请人：BRITISH BROADCASTING CORPORATION

地址：Broadcasting House London W1A 1AA GB

国籍：GB

代理机构：Abnett, Richard Charles

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