An Improved Implementation of Debit-interleaving

This investigation was performed to reduce the number of memory unit with simply signal control comparing to PINGPONG RAM's methods of implementing debit-interleaving technique in China Mobile Multimedia Broadcasting (CMMB). Our experiment was performed by using one Single-Access RAM (SARAM) to complete real time debit–interleaving in CMMB receiver with the data rate of constellation less than half of one period of system clock. This implementation result shows that the proposed method can not only complete real time signal processing, but also saves nearly 40% of memory units comparing to the PINGPONG RAM method. It also has a signal controller simpler than Tang and Fu's does. It was concluded that the implementation, introducing in this paper, can be effectively used for debit-interleaving in CMMB receiver.