802.11ax Receiver Hardware Design And Implementation And Module Optimization

WIFI has been widely used,and gradually become an essential part of life due to the continuous development of wireless LAN.Now,the main requirements for WIFI are divided into three points: support for massive user access,increase data transmission rate and have a good user experience,but the existing WIFI network does not meet these requirements.In order to solve these problems,IEEE proposed 802.11 ax standard,this is the latest wireless local area network standard at present,it's goal is to improve user's speed and user's experience in high-density scenes.Currently,the 802.11 ax standard is still in development.In order to occupy a place in the 802.11 ax market,it is very important to research the prototype based on the 802.11 ax protocol.Therefore,based on the 802.11 ax standard,this paper designed and implemented the receiver prototype in FPGA hardware,and optimized the difficulties in implementation.This ensures that the receiver implemented in this paper has great advantage compared to the existing receiver in high-density scenes.This paper mainly based on 802.11 ax standard,and achieved 802.11 ax receiver prototype reference to 802.11 series.In order to ensure the practicality and performance optimization of the receiver prototype,this paper mainly does three aspects of work.First,designed the data processing flow of the receiver according to the 802.11 ax frame structure and transmit data flow,and simulated the designed flow at the algorithm level to ensure its feasibility.Second,According to the 802.11 ax standard,analyzes the receiver's implementation goals and implementation difficulties.At the same time,proposes an overall implementation framework of the receiver according to the receiver data processing flow,and describes the hardware design and implementation of each module in the framework.Third,describes the detailed design and implementation of the key implementation difficulties in receiver prototype.It mainly includes the design and implementation of high-rate Viterbi decoding,resource optimization of digital IF down-conversion,and the improvement of system stability,which ensures the advantages of the receiver implemented in this paper in high-density scenes.Finally,this paper carries the functional tests,practical tests and flow tests on the implemented receivers to ensure that they achieve their goals.Then analyze the test results,and summarize their advantages over existing receivers.