Abstract: An indicator circuit includes a power detection circuit and a codeword mapping circuit. The power detection circuit is coupled to a signal output terminal of a transmitter circuit, and is arranged to detect a power of an output signal to generate a detection result. The codeword mapping circuit is arranged to generate an indicator codeword according to the detection result, wherein the codeword mapping circuit converts the detection result according to a plurality of non-linear bases to correspondingly generate a plurality of converted detection results, and combines the plurality of converted detection results to generate the indicator codeword.

Abstract: A communication device for handling a Peak-to-Average Power Ratio (PAPR), includes a transforming module, configured to perform a first plurality of inverse fast Fourier transforms (IFFTs) on a plurality of coefficients in a scene according to a first inverse fast Fourier transform (IFFT) size and the scene, to obtain a plurality of results; a processing module, coupled to the transforming module, configured to obtain a plurality of norms of the plurality of results, and to obtain a plurality of values of the plurality of coefficients; and a transmitting module, coupled to the processing module, configured to perform a second plurality of IFFTs on a plurality of frequency-domain signals according to a second IFFT size, the plurality of coefficients with the plurality of values and the scene, to obtain a plurality of time-domain signals, wherein the second IFFT size is greater than the first IFFT size.

Abstract: A communication device for handling a Peak-to-Average Power Ratio (PAPR), includes a transforming module, configured to perform a first plurality of inverse fast Fourier transforms (IFFTs) on a plurality of coefficients in a scene according to a first inverse fast Fourier transform (IFFT) size and the scene, to obtain a plurality of results; a processing module, coupled to the transforming module, configured to obtain a plurality of norms of the plurality of results, and to obtain a plurality of values of the plurality of coefficients; and a transmitting module, coupled to the processing module, configured to perform a second plurality of IFFTs on a plurality of frequency-domain signals according to a second IFFT size, the plurality of coefficients with the plurality of values and the scene, to obtain a plurality of time-domain signals, wherein the second IFFT size is greater than the first IFFT size.

Abstract: A receiver and a receiving method for use in a LINC OFDM system are provided. The receiver receives a signal from a transmitter of the combinerless LINC OFDM system, generates a CP removed signal by removing a CP from the signal, generates a DFT signal by applying a DFT operation to the CP removed signal, generates a plurality of equalized symbols according to the DFT signal, generates a plurality of soft bits from the equalized symbols, generates a plurality of candidates regarding a transmitted bit sequence based on the soft bits by a list-Viterbi decoding algorithm, and decides an estimated transmitted bit sequence corresponding to the transmitted bit sequence from the candidates. The receiving method is able to perform the operations of the receiver.

Abstract: A receiver and a receiving method for use in a LINC OFDM system are provided. The receiver receives a signal from a transmitter of the combinerless LINC OFDM system, generates a CP removed signal by removing a CP from the signal, generates a DFT signal by applying a DFT operation to the CP removed signal, generates a plurality of equalized symbols according to the DFT signal, generates a plurality of soft bits from the equalized symbols, generates a plurality of candidates regarding a transmitted bit sequence based on the soft bits by a list-Viterbi decoding algorithm, and decides an estimated transmitted bit sequence corresponding to the transmitted bit sequence from the candidates. The receiving method is able to perform the operations of the receiver.