Description: 描述了一个用于微波传输设备的16QAM接收机解调芯片的FPGA实现,芯片集成了定时恢复、载波恢复和自适应盲判决反馈均衡器(DFE),采用恒模算法(CMA)作为均衡算法。芯片支持高达25M波特的符号速率,在一片EP1C12Q240C8(ALTERA)上实现,即将用于量产的微波传输设备中。
-Describes a microwave transmission equipment for 16QAM receiver demodulator chip FPGA realization of an integrated chip timing recovery, carrier recovery and blind adaptive decision feedback equalizer (DFE), using constant modulus algorithm (CMA) as the equalization algorithm. Chip supports up to 25M baud symbol rate, in the midst of EP1C12Q240C8 (ALTERA) achieved for the upcoming production of microwave transmission equipment. Platform: |
Size: 281600 |
Author:萝卜 |
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Description: 信道均衡的讲义，将均衡讲的出神入化，非常之好-Channel equalization of the handouts, will talk about the superb balance, very good Platform: |
Size: 50176 |
Author:陈吉成 |
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Description: 信道均衡技术是移动通信中抗衰落的三大技术之一。均衡是用来解决由于信道的非线性和时变性引起的码间干扰的有效技术。如何有效解决码间干扰问题，具有重要的理论意义。 本文在介绍自适应均衡技术的基本原理和均衡研究现状的基础上，阐述了目前几种典型的自适应均衡算法及其它们存在的一些问题。文章在传统自适应算法的基础上，提出了两种改进算法：基于RLS的自适应MIMO-DFE算法和基于分数间隔的改进CMA+SDD算法。计算机仿真结果表明，两种算法的收敛速度快，稳态误差小，均衡效果与传统算法相比都取得了明显提高。-Channel equalization in mobile communications technology is the anti-fading of the three technologies. Balance is used to solve due to channel non-linear and time-varying inter-symbol interference caused by effective techniques. How to effectively solve the inter-symbol interference problem, has important theoretical significance. This paper introduces the basic principle of adaptive equalization and balanced study of the status quo, based on the current set of several typical adaptive equalization algorithm and some of the problems of their existence. Article in the traditional adaptive algorithm based on the proposed two improved algorithms: RLS-based adaptive MIMO-DFE algorithms and interval-based scores improved CMA+ SDD algorithm. Computer simulation results show that the two kinds of convergence of the algorithm fast, steady-state error is small, compared to equilibrium results with the traditional algorithms have achieved significantly improved. Platform: |
Size: 43012096 |
Author:阿郎 |
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Description: 。本文研究了SC-FDE系统中的最小均方误差判决反馈
均衡（MMSE-DFE）和基于LMS准则的自适应均衡算法，
MATLAB仿真表明，由于LMS自适应均衡算法能有效的跟
踪信道变化并更新均衡器的抽头系数，其性能略优于最小
均方误差判决反馈均衡算法。-. In this paper, the SC-FDE system, the minimum mean square error decision feedback
Equalization (MMSE-DFE) and criteria based on LMS adaptive equalization algorithms
MATLAB simulation results show that LMS adaptive equalization algorithm as effective with
Track changes and update the channel equalizer tap coefficients, its performance slightly better than the minimum
Mean square error decision feedback equalization algorithm. Platform: |
Size: 3706880 |
Author:姜烨 |
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Description: gmsk调制系统的DFE均衡算法，一篇外文论文，有参考价值-gmsk DFE equalization algorithm modulation system, a foreign language papers, there is reference value Platform: |
Size: 1147904 |
Author:影子 |
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Description: 给出完整的通信系统和多径通信信道，并使用带RLS算法的判决反馈均衡器进行均衡。
内有详细注释。
在DFE(lms算法）的基础上，采用RLS算法
产生 0 1 序列--> QPSK映射 --> 上变频 --> 信道（多径、加噪）
--> 下变频 --> LMS算法均衡 --> 解映射、判决 --> 求误码率、星座图-This progam include a complete communication system with a multipath channel, based which decision feedback equalization with RLS algrithem is implemented. Platform: |
Size: 2048 |
Author:西电东风 |
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Description: SC-FDE程序研究了IEEE802. 16a宽带无线接入系统的单载波频域均衡( SC - FDE)方案,建立了完整的802. 16a单载波频域均衡系统仿真平台,研究了SC - FDE系统的频域均衡、编码和分集增益。-SC-FDE simulation,An integrated simulation p latform of 802. 16a SC- FDE is estab2
lished for investigating the frequency domain equalization, coding and diversity gain. The simulation re2
sults show that SC- FDE system combined with decision feedback equalization (DFE) , Platform: |
Size: 1024 |
Author:zouqifeng |
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Description: Equalization is the process of adjusting the balance between frequency components within an electronic signal Platform: |
Size: 1024 |
Author:milad |
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Description: The problem of channel equalization via channel
identification (CEQCID) that has previously been considered by a
handful of researchers is explored further. An efficient algorithm
for mapping the channel parameters to the equalizers coeficients
is proposed. The proposed scheme is compared with a lattice
least squares (LS) based receivers. For the particular application
of the high frequency (HF) radio channels, we find that the
CEQCID has lower computational complexity. In terms of the
tracking performance, also, the CEQCID has been found to be
superior to the LS based receivers [4]. We emphasize on the
implementation of a fractionally tap-spaced decision feedback
equalizer (DFE) and compare that with the T-spaced DFE of
[4]. We show that the former is a better choice for the multipath
HF channel-The problem of channel equalization via channel
identification (CEQCID) that has previously been considered by a
handful of researchers is explored further. An efficient algorithm
for mapping the channel parameters to the equalizers coeficients
is proposed. The proposed scheme is compared with a lattice
least squares (LS) based receivers. For the particular application
of the high frequency (HF) radio channels, we find that the
CEQCID has lower computational complexity. In terms of the
tracking performance, also, the CEQCID has been found to be
superior to the LS based receivers [4]. We emphasize on the
implementation of a fractionally tap-spaced decision feedback
equalizer (DFE) and compare that with the T-spaced DFE of
[4]. We show that the former is a better choice for the multipath
HF channel Platform: |
Size: 420864 |
Author:hamed |
Hits:
Search - DFE equalization