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The host-SIMD style heterogeneous multi-processor architecture offers high computing performance and user friendly programmability. It explores both task level parallelism and data level parallelism by the on-chip multiple SIMD coprocessors. For embedded DSP applications with predictable computing feature, this architecture can be further optimized for performance, implementation cost and power consumption...
Application Specific Instruction-set Processors (ASIPs) are needed to handle the future demand of flexible yet high performance computation in mobile devices. However designing an ASIP is complicated by the fact that not only the processor but, also tools such as assemblers, simulators, and compilers have to be designed. Novel Generator of Accelerators And Processors (NoGap), is a design automation...
Flexible Application Specific Instruction set Processors (ASIP) are starting to replace monolithic ASICs in a wide variety of fields. However the construction of an ASIP is today associated with a substantial design effort. NoGap (Novel Generator of Micro Architecture and Processor) is a tool for ASIP designs utilizing hardware multiplexed data paths. One of the main advantages of NoGap compared to...
We present an automatic register placement technique that enables the synthesis of low-power clock trees for low-power ICs. On 7 industrial designs, comparing to (1) a commercial base flow and (2) the power-aware placement technique in, the technique respectively reduced clock-tree power by 19.0% and 14.9%, total power by 15.3% and 5.2% and WNS under on-chip variation (plusmn10%) by 1.8% and 1.5%...
As the use of FPGAs increases, the importance of highly optimized processors for FPGAs will increase. In this paper we present the microarchitecture of a soft microprocessor core optimized for the Virtex-4 architecture. The core can operate at 357 MHz, which is significantly faster than Xilinxpsila Microblaze architecture on the same FPGA. At this frequency it is necessary to keep the logic complexity...
This paper studies efficient complex valued matrix manipulations for multi-user STBC-MIMO decoding. A novel method called Alamouti blockwise analytical matrix inversion (ABAMI) is proposed for the inversion of large complex matrices that are based on Alamouti sub-blocks. Another method using a variant of Givens rotation is proposed for fast QR decomposition of this kind of matrices. Our solutions...
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