Performance Improvement of LeastSquares Adaptive Filter for High-Speed Train Communication Systems
Journal Title: Journal of ICT Research and Applications - Year 2017, Vol 11, Issue 2
Abstract
The downlink communication channel from high-altitude platform (HAP) to high-speed train (HST) in the Ka-band is a slowly time-varying Rician distributed flat fading channel with 10-25 dB Rician K factor. In this respect, the received signal is mainly affected by the Doppler shift of the line-of-sight (LOS) link. In order to increase receiver performance, we propose to firstly compensate the Doppler shift of the received signal before least-squares (LS) adaptive filtering is pursued. Implementing the proposed method requires a priori knowledge of the time-varying phase of the LOS component. This is justified since signalling between the train and the controller exists such that the train velocity and location are predictable. Implementing the proposed method to the recursive LS (RLS) received beamforming algorithm shows reduction of mean square error (MSE) and bit error rate (BER).
Authors and Affiliations
Irma Zakia, Adit Kurniawan
Keywords
Related Articles
- EP ID EP324684
- DOI 10.5614/itbj.ict.res.appl.2017.11.2.3
- Views 127
- Downloads 0
Generic Animation Method for Multi-Objects in IFS Fractal Form
Both non-metamorphic animation and metamorphic animation of objects or multi-objects in IFS fractal form as basic animation method can be implemented by a modified version of the random iteration algorithm as basic algor...
Performance Improvement of LeastSquares Adaptive Filter for High-Speed Train Communication Systems
The downlink communication channel from high-altitude platform (HAP) to high-speed train (HST) in the Ka-band is a slowly time-varying Rician distributed flat fading channel with 10-25 dB Rician K factor. In this respect...
Adjusting Time of Flight in Ultrasound B-mode Imaging for Accurate Measurement of Fat using Image Segmentation Technique
This research attempted to measure chicken intramuscular fat content using improved ultrasound B-mode images and image segmentation. Adapted B-mode imaging is proposed to increase the positioning accuracy of B-mode image...
A Chemical Reaction Optimization Approach to Prioritize the Regression Test Cases of Object-Oriented Programs
Regression test case prioritization is used to improve certain performance goals. Limited resources force to choose an effective prioritization technique, which makes an ordering of the test cases so that the most suitab...
Passive Available Bandwidth Estimation Based on Collision Probability and Node State Synchronization in Wireless Networks
In wireless networks, available bandwidth estimation is challenging because wireless channels are used by multiple users or applications concurrently. In this study, we propose a passive measurement scheme to estimate th...