31-10-2013 дата публикации
Номер: US20130287046A1
Принадлежит:
Methods and communication systems are presented, in which an interleaver depth is adjusted. 1. A device comprising:a convolution interleaver configured to interleave the plurality of codewords or data blocks based on an interleaver depth, wherein the convolutional interleaver is capable to change the interleaver depth by an amount other than an integer multiple of the block length of the plurality of codewords or data blocks.2. The device according to claim 1 , wherein the convolution interleaver is configured to insert dummy bytes in an output sequence of the convolution interleaver.312. The device according to claim 2 , wherein the convolution interleaver is configured to increase the interleaver depth from a first interleaver depth D to a second interleaver depth D claim 2 , wherein a number of dummy bytes inserted in the output sequence is determined by the sum obtained by summing up ΔT(z claim 2 ,y) for z=0 to I−1 claim 2 , [{'br': None, 'i': T', 'z,y', 'D', 'z/I−T', 'y', 'D', 'z/I−T', 'y, 'sub': 2', '2', '1', '1, 'Δ()=floor[(−1)*off()]−floor[(−1)*off()] wherein'}, {'br': None, 'i': T', 'y', 'D', 'y/I', 'D', 'y/I, 'sub': j', 'j', 'j, 'off()=[(−1)*−floor((−1)*)],'}], 'wherein'}{'sub': j', 'j', '1', 'j', '2, 'wherein Drepresents the interleaver depth either before the change in interleaver depth, wherein Dis D, or after the change in interleaver depth, wherein Dis D, and wherein floor(m) is a mathematical operator wherein the value “m” is rounded down to the next lowest integer value, and I comprises the number of bytes associated with a data block or codeword to be transmitted.'}412. The device according to claim 2 , wherein the convolution interleaver is configured to increase the interleaver depth from D to D claim 2 , wherein the convolution interleaver is further configured to change the interleaver depth such that a byte at the first position of the codeword or data block is read after the change claim 2 , wherein the number of dummy bytes inserted in the ...
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