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<a target="_blank" rel="noopener" href="https://fatcat.wiki/container/aoxdam2x3rcszlweqkjkp7qcyy" style="color: black;">International Journal of Future Generation Communication and Networking</a>
As a kind of wireless communication system, OFDM systems are widely used in the current and next generation wireless communications. According to the characteristics of OFDM systems, this paper proposed a new heterogeneous multi-core DSP architecture for OFDM system -HeteroM-DSP. Hetero M-DSP based on VLIW DSP core, which has good Data-Level Parallelism and Instruction-Level Parallelism. Each independent DSP core through sharing memory, task scheduling bus and bus controller based open-ring<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.14257/ijfgcn.2016.9.10.28">doi:10.14257/ijfgcn.2016.9.10.28</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/qwxcdthtpbepbakz5xy4oejc6y">fatcat:qwxcdthtpbepbakz5xy4oejc6y</a> </span>
more »... rconnection, improve the communications parallelism between DSP cores. Meanwhile, in order to implement different OFDM systems flexibly, each DSP core has different computational capabilities. It is also improved processor performance/ power rate. Experimental results for the IEEE 802.11a receiver show that Hetero M-DSP can efficiently use for OFDM systems. 328 throughput, then DSP needs certain flexibility while guaranteeing throughput of the system. Directing at characteristics of OFFDM system, this paper proposed a kind of heterogeneous multi-core DSP architecture-HeteroM-DSP used for OFDM system. HeteroM-DSP consists of DSP cores based on VLIW instruction set architecture with good instruction set parallelism and data-level parallelism. Each independent DSP core is interconnected through open-loop interconnection structure consisting of shared memorizer, task scheduling bus and bus controller, which improves parallelism of inter-nuclear communication of multi-core DSP. In the meantime, DSP cores have different computing power, making the processor be able to highly efficiently and flexibly realize various OFDM systems and further improve performance/power consumption ratio of the processor. This paper is arranged as follows: chapter two introduces relevant work of multi-core DSP; chapter three briefly introduces baseband digital signal processing of OFDM system; chapter four specific ly expounds HeteroM-DSP architecture; chapter five, taking IEEE 802.11a as an example, displays design flow of HeteroM-DSP and performance and power consumption analysis of the processor; the final part is the conclusion.
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