High-performance and Low-power Consumption Vector Processor for LTE Baseband LSI

摘要

Recently, the transmission rate for handheld devices has been increasing by Long Term Evolution (LTE), and baseband LSI has come to need a higher performance.In addition, handheld devices will use the second- and third-generation communication method, so a baseband LSI will need to handle multiple communication methods.Because implementing all communication circuits results in a large area, we have been developing Software Defined Radio (SDR), which switches each communication method with software.To implement SDR for handheld devices, a high-performance and low-power consumption digital signal processor (DSP) is needed.We have developed a DSP which inherits the architecture of vector supercomputers, and the architecture has advantages of a low power consumption and application developments.We have downsized the vector architecture for embedded systems.The peak performance is 12 giga operations per second (GOPS) at 250 MHz, and the power consumption is relatively low at 30 mW for 28 nm process technology on average.This paper presents the vector processor that we developed.