| With the widespread demand for wireless communication society, LTE technology has now put into our daily life. Three big operators have also introduced the TD-LTE service, large bandwidth, high rate, the stability that it become the development trend of the future. In China, as the TD-LTE home base station of emerging technology because of its simple installation, stable performance, low power consumption, there is a huge space for development and practical application value, which is completely independent research and development of the baseband chip be imperative. Baseband chip of physical layer of the uplink control channel as an integral part of a number of important factors, determines the channel transmission quality, it determines the performance of each part of base station. Under this background, this paper completed the Maotu DSP TD-LTE uplink receiver physical control and implementation of channel full link design based on.Firstly, this paper introduces the basic concept, TD-LTE and physical layer control channel protocol. Mainly introduces the current situation of the development process, the development of LTE and the future trend, and the key technologies of TD-LTE is briefly introduced, and briefly introduces the development situation at home and abroad the home base station, and then introduces the basic knowledge of the TD-LTE physical layer protocol, including the physical layer frame structure and the physical meaning of the basic parameters, and briefly introduces the design process of sending end physical layer control channel format 1/1A/1B/2/2B.Then the physical control channel uplink receiver design and implementation of floating point based on C model. In the VC++ and Matlab algorithms of floating-point model based software environment to achieve. The main modules include solutions of SC-FDMA symbols, channel estimation, filtering, channel equalization, the fast Fu Liye transform, average quadrature amplitude modulation, subcarrier averaging and symbols. This paper also function interface design for each module are explained, and compare the floating-point C model and standard instrument data, draw the physical control channel of each format of the receiving model performance curve, and make analysis to prove the performance of the C model conforms to the provisions of the agreement.Finally, according to the characteristics of the Chinese Academy of Sciences, the software and hardware of Maotu developed by DSP design scheme of floating-point C model for the realization and optimization of fixed point. The main technologies of fixed-point floating-point and fixed-point design includes the overall fixed rules and each module. Scalar and vector instructions and instruction set of Maotu DSP using the set of each module in the use of methods and optimization techniques, and design the program flow chart of each module. In this paper, then on the DSP development process and the results show that the float point to fixed-point model performance is the mean square error statistics to prove consistency and float point to fixed-point model, thus proving the fixed-point model conforms to the provisions of the agreement, and the operation efficiency and throughput do statistics and comparison function to each module, performance analysis of complete fixed-point model.The innovation point of this article is based on the CAS Institute of computing completely independent research and development of Maotu DSP, the base station of TD-LTE physical layer control channel receiver is designed and implemented, the design is first applied to the Maotu DSP TD-LTE physical layer control channel, on the other a future Maotu DSP design and application of meter and independent research and development of the baseband chip plays a reference role. |
