Matrix block interveaving method and device for reducing OFDM system peak-to-average power ratio
A peak-to-average power ratio and matrix block technology, applied in the field of communication, can solve the problems of increasing OFDM system processing delay, greatly reducing PAPR performance, increasing the difficulty of system synchronization and channel estimation, etc.
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[0064] The present invention will be described in further detail below with reference to the accompanying drawings.
[0065] With reference to Fig. 1, be used for the matrix block interleaving method of the present invention in OFDM system, carry out in the following steps at sending end and receiving end:
[0066] The first step, according to the number N of OFDM subcarriers, determine the number of rows and columns P and Q of the matrix A to be divided, where P×Q=N;
[0067] After the number of rows and columns P and Q are determined, the number of rows and columns does not need to be re-determined for the input OFDM symbol. The selection of P and Q should make P and Q as close as possible, which will be beneficial to the selection of subsequent segmentation points. For example, when N is 128, P=8 and Q=16 can be selected instead of P=4 and Q=32.
[0068] In the second step, according to P and Q, the OFDM parallel input sequence S is transformed into a matrix A whose number...
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