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应用OFDM可以有效地对抗多径时延扩展。循环前缀不仅可以消除符号间干扰（ISI），还能消除子载波间干扰（ICI).本项目完整地仿真了OFDM系统。-Application of OFDM can effectively combat multipath delay spread. Cyclic prefix can not only eliminate inter-symbol interference (ISI), can eliminate Inter-carrier interference (ICI). This project a complete simulation of the OFDM system.
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Size: 41984 |
Author: 吏继斌 |
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Description: the paper is relavent to ISI and ICI that occurs in wireless medium
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Size: 197632 |
Author: shining |
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Description: large.
The second technique is the time–frequency domain equalization with channel shortening [29]. A time-domain equalizer is inserted to reduce the MIMO channels to the ones with the channel length shorter than or equal to the CP length, and then, a one-tap frequency-domain equalizer is applied to each subcarrier. When the MIMO channels are shortened by the time-domain equalizer, residual ICI and ISI are introduced. They cannot be eliminated by the subsequent frequency-domain equalizer and, thus, limit the performance.
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Size: 295936 |
Author: uunuu0717 |
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Description: Multicarrier modulations attract a lot of attention ranging from wireline to wireless
communications compared to single carrier modulation because of theirs capability to
efficiently cope with frequency selective fading channels. Much of attention in the present
literature emphasizes on the use of conventional OFDM, which is able to avoid both inter -
symbol interference (ISI) and inter - channel interference (ICI) making use of a suitable cyclic
prefix.
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Size: 183296 |
Author: archana |
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Description: Comparative Study of Different Guard Time
Intervals to Improve the BER Performance of
Wimax Systems to Minimize the Effects of ISI and
ICI under Adaptive Modulation Techniques over
SUI-1 and AWGN Communication Channels
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Size: 973824 |
Author: mejsi |
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Description: OFDM系统通过在时域符号前插入大于信道冲击响应长度的循环前缀（CP）可以避免符号间干扰(ISI)和载波间干扰(ICI)。但是，过长CP会使得数据传输效率降低。可以采用最小均方误差（MMSE）信道缩短均衡技术来压缩信道冲击响应长度。-OFDM systems avoid inter-symbol interference (ISI) and inter-carrier interference (ICI) by inserting a cyclic prefix (CP) larger than the channel impulse response length before the time-domain symbol. However, long CP will reduce the efficiency of data transmission. A minimum mean square error (MMSE) channel shortening equalization technique may be employed to compress the channel impulse response length.
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Size: 7500800 |
Author: 15383463525wyh |
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Description: 从抗ISI和ICI的角度来讲，总是希望能量集中在时频格点附近，而扩散到其他格点的能量越小越好，TFL正是描述这一特性的最直接的方法，从滤波器的角度看，TFL特性描述两个滤波器之间的相关性，描述TFL特性的方法包括TFL函数和TFL参数两大类，TFL函数又包含瞬时相关函数、模糊函数和干扰函数，而TFL参数包括Heisenberg参数和方向参数。
本代码使用matlab仿真常见的高斯、IOTA和HSIN等滤波器，与矩形滤波器进行对比与分析。(This code uses MATLAB to simulate common filters such as Gauss, IOTA and HSIN, and compares and analyzes rectangular filters.)
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Size: 1061888 |
Author: 圆妮
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