Description: uising different ICI self-cancellation scheme to see its performance-uising different ICI self-cancellation s cheme to see its performance Platform: |
Size: 60440 |
Author:俞正元 |
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Description: uising different ICI self-cancellation scheme to see its performance-uising different ICI self-cancellation s cheme to see its performance Platform: |
Size: 60416 |
Author:俞正元 |
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Description: INTER-CARRIER INTERFERENCE CANCELLATION FOR OFDM SYSTEMS:
Orthogonal Frequency Division Multiplexing (OFDM) is an emerging multi-carrier modulation scheme, which has been adopted for several wireless standards such as IEEE 802.11a and HiperLAN2. A well-known problem of OFDM is its sensitivity to frequency offset between the transmitted and received carrier frequencies. This frequency offset introduces inter-carrier interference (ICI) in the OFDM symbol. This project investigates three methods for combating the effects of ICI: ICI self-cancellation (SC), maximum likelihood (ML) estimation, and extended Kalman filter (EKF) method. These three methods are compared in terms of bit error rate performance, bandwidth efficiency, and computational complexity. Through simulations, it is shown that the three techniques are effective in mitigating the effects of ICI. For high values of the frequency offset and for higher order modulation schemes, the ML and EKF methods perform better than the SC method. Platform: |
Size: 390144 |
Author:redami |
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Description: 该文档介绍了高速移动情况下，由于多普勒频移导致的ICI干扰问题。描述了问题的产生，解决的算法，并附有自消除、最大似然估计、卡曼滤波参数估计的matlab仿真-introuces the ICI problem in high-speed mobile radion channel.Describe the reasons ,algorithms,such as Self-cancellation,ML,Kalman.And the M files
are atteched Platform: |
Size: 390144 |
Author:夜思明 |
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Description: This code is related with ici minimization technique using self cancellation scheme-This code is related with ici minimization technique using self cancellation scheme Platform: |
Size: 14387200 |
Author:saggy |
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Description: 在不同的频率偏移的情况下技术ICI自消除误差仿真-ICI self cancellation error simulation in different frequency offset case technology Platform: |
Size: 1024 |
Author:丁长文 |
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Description: In a rapidly fading environment in high data rate wireless communication systems the orthogonality of OFDM sub carrier signals destroyed and this phenomenon potentially results in Inter carrier interference (ICI).The novel contribution of the paper is that, the effects of ICI have been analyzed and solutions to ICI diminution have been presented in different frequency offset values such as 0.5,0.15 and 0.30 . The first method is a self-cancellation scheme, in which redundant data is transmitted onto adjacent subcarriers such that the ICI between adjacent sub carriers cancels out at the receiver. The other technique the Extended Kalman Filter (EKF) method statistically estimate the frequency offset and correct the offset using the estimated value at the receiver-In a rapidly fading environment in high data rate wireless communication systems the orthogonality of OFDM sub carrier signals destroyed and this phenomenon potentially results in Inter carrier interference (ICI).The novel contribution of the paper is that, the effects of ICI have been analyzed and solutions to ICI diminution have been presented in different frequency offset values such as 0.5,0.15 and 0.30 . The first method is a self-cancellation scheme, in which redundant data is transmitted onto adjacent subcarriers such that the ICI between adjacent sub carriers cancels out at the receiver. The other technique the Extended Kalman Filter (EKF) method statistically estimate the frequency offset and correct the offset using the estimated value at the receiver Platform: |
Size: 211968 |
Author:Fardeen |
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Search - ICI self cancellation