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重点研究了全数字QAM接收机中的两个关键技术——符号同步和信道盲均衡。研究Gardner定时误差检测算法，盲均衡方面，重点研究了CMA及其改进算法，采用MMA算法和DD-LMS算法联合均衡-Focuses on the all-digital QAM receiver in the two key technologies- the symbol synchronization and channel blind equalization. Research Gardner timing err
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Coarse Symbol Timing
Synchronization (CSTS) algorithm for OFDM systems that
is robust to a multi-path fading channel
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timing recovery Symbol Timing
Synchronization 1 2
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GARDNER algorithm used the timing of the simulation module, enter each symbol four sampling points, by interpolation, the output value of one sample
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为了减少无线信道中存在的多径和频偏对中国移动多媒体广播(CMMB)系统传输信号同步的影响，本文结合CMMB标准协议规定的具体帧结构，分析了符号同步对系统的影响，讨论了传统最大似然(ML)算法的优缺点，并基于文献中的无数据辅助算法，提出了一种适合该系统并且复杂度较低的粗符号定时同步算法。仿真结果表明，在AWGN及多径信道环境下，新算法可以有效克服传统算法相关峰不明显的缺陷，其估计性能更好-In order to reduce the influence for synchronization of
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ofdm系统下经典的同步方法：基于前导序列的定时同步，符号同步-ofdm systems classical synchronization: Based on the leading sequence timing synchronization, symbol synchronization
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学通信的必看，几乎涵盖了同步的所有方面，包括符号定时和载波同步，老外总结的，很不错！-Learning to communicate Watchable, covering almost all aspects of synchronization, including symbol timing and carrier synchronization, foreigners summarize, very good!
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In a series of papers in recent years new
structures for coherent M-PSK (M-ary Phase Shift Keying)
receivers were suggested. These include structures for carrier
phase detectors for the carrier PLL (Phase Lock Loop),
carrier PLL lock dete
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A Novel Time and Frequency Synchronization Scheme for OFDM Systems
A new training symbol is designed and a novel
time and frequency synchronization scheme for orthogonal frequency division multiplexing systems is proposed. The time synchroniza
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Time and Frequency Synchronization Techniques for
OFDM Systems operating in Gaussian and Fading
Channels: A Tutorial
The aim of this paper is to survey and compare
previous methods for Data-aided timing and frequency
synchronization of O
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OFDM is a multi-carrier transmission technique. It converts the frequency selective fading channel into a collection of parallel flat fading sub-channels which simplifies the structure of a receiver. OFDM has been widely used in communication system
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Timing Synchronization for 802.11a WLANs under Multipath Channels
In the Wireless Local Area Network
(WLAN) standard adopted by the IEEE 802.11a
standardization group, each data packet starts with a
preamble, which consists of ten short train
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In this letter, we propose a simple orthogonal
frequency-division multiplexing (OFDM) scheme for an asynchronous cooperative system, where OFDM is implemented at the source node, and time-reversion and complex conjugation are implemented at the rel
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：LTE(Long Term Evolution，长期演进)系统中的小区初始搜索过程通过分别检测主同步信号(Primary Synchronization Signal，PSS)和辅同步信号(Secondary Synchronization Signal，SSS)来完成，搜
索结果包括小区组ID、符号定时、频偏估计、组内小区ID以及帧定时[1]。然而，若接收信号 1IDN 2IDN
中存在整数倍频偏，则由于时域的相位旋转，主
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In this letter, we propose a simple orthogonal
frequency-division multiplexing (OFDM) scheme for an asynchronous cooperative system, where OFDM is implemented at the source node, and time-reversion and complex conjugation are implemented at the rel
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本文描述了使用多相滤波器组实现数字接收机中的符号同步的方法。(This paper describes the use of a polyphase filter-
bank to perform the interpolations required for symbol timing
synchronization in a sampled-data receiver.)
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