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The Simulation Study Based on IEEE802.20 Standard for Channel Model and Channel Coding

Author: TianZuo
Tutor: LiuShouYin
School: Central China Normal University
Course: Circuits and Systems
Keywords: IEEE802.20 Channel modeling Channel coding LDPC
CLC: TN925.93
Type: Master's thesis
Year: 2009
Downloads: 53
Quote: 0
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Abstract


With the development of mobile Internet technology, people in everyday life and business activities, more and want the flexibility to be able to move the way Internet access. November 2002, IEEE802 Standards Committee established the 802.20-Mobile Broadband Wireless Access (MBWA) Working Group, which is dedicated to the mobile user to develop a new standard. IEEE802.20 specification plan for shared packet data mobile broadband wireless access system air interface to establish the following access specification: the work of the operating license, lower than the 3.5GHz frequency band; highest per-user data rates can exceed 1Mbit / s; supports up to 250km / h, the vehicle speed; the cell coverage equivalent MAN; spectral efficiency, the user data rate and the number of active users is much higher than the existing mobile systems. IEEE802.20 physical layer key technologies for research, the main job of the following aspects of the work of analysis and research. 1 classification of broadband wireless access technology development status and IEEE802 series of agreements and progress, and several mobile communications technology performance, given the need to study a few of IEEE802.20 protocol physical layer kinds of key technologies. 2, build IEEE802.20 channel model. IEEE802.20 physical layer for data transmission in the framework of the model and related algorithms are introduced, starting from the general channel model, by analysis on the MIMO channel to the existing MIMO channel models and modeling method, gives a Based IEEE802.20 protocol channel model, and the model simulation and performance analysis, model the frequency-domain and time-domain characteristics, which prove this paper, channel models and simulation methods to describe quasi taken IEEE802.20 channel characteristics. On this basis, we further simulation analysis of the channel capacity of IEEE802.20. 3, channel coding techniques in IEEE802.20. Front work done on the basis of the channel coding technology agreement, combined with IEEE802.20 physical layer specification and IEEE802.20 channel established model based on the IEEE802.20 protocol LDPC codes channel coding techniques. Build and decoding method of the LDPC code, LDPC code encoding matrix structure in the protocol, and then using the MATLAB software LDPC code in the channel conditions 802.20 performance simulation, and were compared with the protocol of the Turbo code. The simulation results show the performance is better than the performance of Turbo codes, LDPC codes and theoretical analysis.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Radio relay communications,microwave communications > Wireless subscriber loop ( Radio Access Network)
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