| 摘要 |
A receiver (103) is arranged for receiving a signal comprising an interleaved symbol stream. The receiver comprises a convolutional deinterleaver comprising a plurality of delay portions (403) each of which is arranged to delay symbols from the symbol stream from an input to an output by a different amount, the delay portions being arranged in a sequence. An input selector (401) is configured to input the symbols from the symbol stream to the delay portions so that successive symbols are input in accordance with the sequence of the delay portions. An output selector (402) configured to read the symbols from the delay portions (403) by successively selecting the symbols from the outputs of the delay portions in accordance with the sequence of the delay portions to form a deinterleaved symbol stream. A controller is configured to detect a discontinuity puncture in the interleaved symbol stream resulting from symbols being punctured from the interleaved symbol stream, and to identify symbols in the interleaved symbol stream affected by the discontinuity puncture where the identified symbols in the interleaved symbol stream are symbols which would be out of sequence in the deinterleaved symbol stream as a result of the discontinuity puncture. The controller is also configured to store the identified symbols (701), and to input the identified symbols into the delay portions to compensate for the discontinuity, wherein at least one of the delay portions is formed from one or more memories (404) and at least one of the identified symbols is stored in the one or more memories of the delay portions, which would have been occupied by the symbols which had been punctured from the interleaved symbol stream. |
