The LMS algorithm (Least mean square) is common in the adaptive algorithm system. It has a simple calculation and convenient implementation. The convergence performance is excellent and the stability is high in the case of limited precision. The advantages of anti-interference on filtering are obvious. In this paper, the concept of LMS algorithm, the working principle and the selection of technical research scheme on frequency estimation are introduced, and we realize the LMS algorithm by FPGA technology and used it in clutter rejection area.

Research on Optimization of LMS Frequency Estimation Based on FPGA Technology

Traditional path planning method only consider the shortest path, as a result the planning paths may not be the best path if there is a congestion occurred in the planning path. This paper proposed a path planning based on dynamic traffic information to apply in vehicle navigation system. The dynamic information which includes the status of the road section in real-time can be applied in real time navigation. The optimal dynamic routing according to dynamic traffic information can avoid traffic jams automatically and save cost for user. The experiments showed the feasibility and effectiveness of real-time path planning based on dynamic traffic information.

Real-Time Path Planning Based on Dynamic Traffic Information

A enhanced network quality factors with noise interference elimination over FTTX RoF-WDM Optical Network System. This solution combines the concepts of longdistance transmission and ring topology. It is effective in expanding the bandwidth to overcome network congestion and in addressing the issues in wired optical fibers and wireless microwave communication systems. The potential amplified spontaneous emission broadband light source and spectrum-slicing technology are integrated with the dynamic reconfigurable optical add-drop multiplexer to decentralize the management of FTTX RoF-WDM-wavelength-division multiplexed optical network, which optimizes the transmission performance and eliminates multi-path crosstalk. We proved that the flat-gain signal optimization and the semiconductor optical amplifier structure enhance the optical signal and optical signal-to-noise ratio. The downlink quality factor curves in the Q6 data showed an -18.8 dBm increase in the received optical power. Application of the FTTX RoF-WDM broadband access network system achieved low crosstalk, a clear eye diagram, and an eye 3D graph. Since our proposed system uses only a broadband ASE light source to achieve multi-wavelengths transmissions, it also reveals an outstanding with simpler and more economic advantages.

Hsiang-Chen Chui

Papers

A Broadband ASE Light Source-based FTTX RoF-WDM Optical Network System.