| 摘要 |
<p>A method for generating an optimized bit interleaver for OFDM is provided. The key idea is to spread as uniformly as possible the subcarrier positions assigned to S consecutive coded bits over the available frequency band, where S is the memory of the code. Starting from a randomly defined time/frequency interleaving pattern, an iterative algorithm is applied by first swapping randomly subcarrier assignments and secondly by computing a metric representative of said frequency distribution of the subcarriers assigned to S consecutive coded bits, until the ideal interleaving pattern is achieved.</p> |
