Authors: XiaoFeng Tao YanZhao Hou KaiDong Wang HaiYang He Y Jay Guo
Publish Date: 2013/05/01
Volume: 28, Issue: 3, Pages: 420-428
Abstract
It is generally acknowledged that mobile communication base stations are composed of hardware components such as Field Programming Gate Array FPGA Digital Signal Processor DSP which promise reliable and fluent services for the mobile users However with the increasing demand for energyefficiency approaches of low powerconsumption and highflexibility are needed urgently In this circumstance General Purpose Processor GPP attracts people’s attention for its lowcost and flexibility Benefited from the development of modern GPP in multicore Single Instruction Multiple Data SIMD instructions larger cache etc GPPs are capable of performing highdensity digital processing In this paper we compare several softwaredefined radio SDR prototypes and propose the general architecture of GPPbased soft base stations Then the schematic design of resource allocation and algorithm optimization in soft base station implementation are studied As an application example a prototype of GPPbased soft base station referring to the 3rd Generation Partnership Project 3GPP Long Term Evolution LTE is realized and evaluated To the best of our knowledge it is the first SoftLTE prototype ever reported In the end we evaluate the timing performance of the LTE soft base station and a packet loss ratio of less than 0003 is obtainedThis work is supported by the International Scientific and Technological Cooperation Program of China under Grant No 2010DFA11060 the National Natural Science Foundation of China under Grant No 61027003 the National Science and Technology Major Project of China under Grant No 2012ZX03003008003 and the Beijing Municipal Science and Technology Project under Grant No D121100002112002
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