Su Yongtao

A 100 GOPS ASP based baseband processor for wireless communication

This paper presents an ASP (application specific processor) with 512-bit SIMD (Single Instruction Multiple Data) and 192-bit VLIW (Very Long Instruction Word) architecture optimized for wireless baseband processing. It employs optimized architecture and address generation unit to accelerate the kernel algorithms. Based on the ASP, a multi-core baseband processor is developed which can work at 2×2 MIMO and 20 MHz physical bandwidth configuration for LTE inner receiver and meet requirements of Category 3 User Equipment (CAT3 UE). Furthermore, a silicon implementation of the baseband processor with 130nm CMOS technology is presented. Experimental results show that the baseband processor provides 100 GOPS computing ability at 117.6MHz.

System-level design methodology enabling fast development of baseband MP-SoC for 4G small cell base station

“Small Cell” is regarded as the solution to optimize 4G wireless networks with improved coverage and capacity and expected to be deploy in a large number. To meet performance requirements and special constraints on the cost and size, we design a heterogeneous multi-processor SoC for small cell base station, which is composed of ASP (Application Specific Processor) cores, hardware accelerators, general-purpose processor core, and infrastructure and interface blocks. The challenges of developing such a complex chip drive us to employ system-level design methodology in both single core and mutli-core architecture optimizations. The paper discusses in detail the LISA (Language for Instruction-Set Architectures)/SystemC based ASP-algorithm joint optimization, and task-graph driven multi-core architecture exploration. Finally, the results of silicon implementation on SMIC 55nm technology are presented.