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首页> 外文会议>Broadband Multimedia Systems and Broadcasting, 2009. BMSB '09 >Processing speed improvement based on an efficient symbol decoding structure in a T-DMB software baseband receiver
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Processing speed improvement based on an efficient symbol decoding structure in a T-DMB software baseband receiver

机译：T-DMB软件基带接收器中基于有效符号解码结构的处理速度提高

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摘要

Unlike the computationally intensive channel decoding part in the T-DMB baseband receiver, the symbol decoding part consists of many computationally not-intensive function blocks handling complex data. Hence, if implemented in software running on a digital signal processor (DSP) with a small on-chip memory, the symbol decoding part consumes considerable DSP processing power. To improve the processing speed of this part, we propose an efficient symbol decoding structure where data are processed on an OFDM symbol basis and in-process data buffers are reused. As a result, during the entire symbol decoding process, all in-process data are stored on the fast on-chip memory without access to the slow external memory. To further improve the processing speed by reducing the number of load and store cycles required in the symbol decoding part, several function blocks are integrated into one function block. The validity of the proposed structure is confirmed by measurements of the execution cycle number and the bit error rate on an implemented T-DMB software baseband receiver.
机译：与T-DMB基带接收器中的计算密集型信道解码部分不同，符号解码部分由许多处理复杂数据的非计算密集型功能块组成。因此，如果以在具有小的片上存储器的数字信号处理器（DSP）上运行的软件来实现，则符号解码部分将消耗相当大的DSP处理能力。为了提高这部分的处理速度，我们提出了一种有效的符号解码结构，该结构在OFDM符号的基础上对数据进行处理，并重用进程内数据缓冲区。结果，在整个符号解码过程中，所有进行中的数据都存储在快速片上存储器中，而无需访问慢速外部存储器。为了通过减少符号解码部分中所需的加载和存储周期的数量来进一步提高处理速度，将几个功能块集成到一个功能块中。通过在已实现的T-DMB软件基带接收器上测量执行周期数和误码率，可以验证所提出结构的有效性。

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