Research On Baseband Processing For Frequency Evaluation Instrument

Nowadays,with the development of mobile internet,internet of things and other industries that are based on wireless technology,the demand for spectrum is much bigger than before.The collision between old spectrum management mechanism and current demand is becoming more obvious.To guarantee a sustained and healthy development of communications industry,more spectrum resources need to be assigned to communications industry,advanced spectrum technologies should be adopted and a more scientific management methods must be introduced.Evaluating the utilization of radio frequency resource,is the key to increase the utilization of spectrum resource.China has not developed a complete frequency evaluation system and does not have related test instruments.Topic "Research on Frequency Evaluation System on LTE/TD-SCDMA/WCDMA/GSM communication system and Wireless Test System" aims to study frequency evaluation methods and spectrum evaluation system and develop a test instrument which supports multi communication systems.Inspired by the research topic,this paper designs and implements a prototype of baseband processing architecture for frequency evaluation system on LTE communication system,and discusses the architecture design based on service evaluation for frequency evaluation instruments.At the beginning,this paper introduces the key technologies and describes the physical layer resource of LTE communication system,which lays a theoretical foundation for the design and implementation of LTE receiver prototype,and realizes de-rate matching module of this paper.The software architecture of frequency evaluation system on LTE is given in chapter 3.Moreover,this paper designs and realizes a prototype of LTE receiver for frequency evaluation instruments,and proposes optimization methods for baseband timing synchronization module and channel estimation module.In chapter 4,this paper researches downlink channel processing of LTE system,and proposes a design of LTE parameters detection module,which gains system parameters by detecting public control channel of LTE communication system.An optimization of de-RE mapping is achieved.Chapter 5 analyzes the LTE receiver prototype architecture on DSP platform,and proposes an optimized architecture design for frequency evaluation instrument baseband processing,which aims to match the need for service evaluation of the research topic.The conclusions and directions for further research are provided in the last chapter.