Tree search tone reservation for PAPR reduction in OFDM systems
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United States of America Patent
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Nov 6, 2018
Grant Date -
Feb 1, 2018
app pub date -
Oct 16, 2015
filing date -
Oct 16, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
An OFDM transmitter comprising an input for acquiring or receiving a signal to be transmitted, an output for transmitting a PAPR reduced version of the signal, a processor and memory storing code for execution by the processor. The processor, when executing the code, is configure to determine a plurality of possible values of tone reservation, hereinafter referred to as TR, tones for use in TR based PAPR reduction and to perform a tree search over some or all of the possible values under a first constraint that the average power per TR tone does not exceed the average power per tone used for data transmission and a second constraint that selected values for the TR tones reduce PAPR.
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