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正交频分复用(OFDM) 是第四代移动通信的核心技术。该文首先简要介绍了OFDM基本原理,重点研究了理想同步情
况下,保护时隙(CP) 和不同的信道估计方法在高斯信道和多径瑞利衰落信道下对OFDM系统性能的影响。在给出OFDM系
统模型的基础上,用MATLAB语言实现了整个系统的计算机仿真并给出参考设计程序。最后给出在不同的信道条件下,保
护时隙、信道估计方法对OFDM系统误码率影响的比较曲线,得出了较理想的结论。-Orthogonal frequency division mult
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Orthogonal Frequency Division Multiplexing (OFDM)
systems are more sensitive to timing and frequency offsets than
single carrier systems. This Paper presents a method of joint time
and frequency synchronization for OFDM systems. The
synchroni
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0下载：
Orthogonal Frequency Division Multiplexing (OFDM)
systems are more sensitive to timing and frequency offsets than
single carrier systems. This Paper presents a method of joint time
and frequency synchronization for OFDM systems. The
synchroni
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0下载：
Orthogonal Frequency Division Multiplexing (OFDM)
systems are more sensitive to timing and frequency offsets than
single carrier systems. This Paper presents a method of joint time
and frequency synchronization for OFDM systems. The
synchroni
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In this paper, the impact of clipping noise on optical
wireless communication (OWC) systems employing orthogonal
frequency division multiplexing (OFDM) is investigated. The
two existing optical OFDM (O-OFDM) transmission schemes,
asymmetrical
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Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier modulation and multiplexing technique
proposed for 3G, 4G LTE-A systems to achieve higher data rates with better spectral efficiency at low latency. Time
varying nature of the wi
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The 4g wireless uses Orthogonal Frequency Division Multiplexing (OFDM), Ultra Wide Radio Band (UWB), and Millimeter wireless. Data rate of 20mbps is employed. Mobile speed will be up to 200km/hr. The high performance is achieved by the use of long te
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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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Synchronization in OFDM
With its robustness against multipath fading, orthogonal
frequency division multiplexing (OFDM) has become
the modulation of choice for many modern wireless standards.
However, OFDM is very sensitive to offsets in f
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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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Also see orthogonal frequency-division multiplexing ( OFDM ), frequency-division multiplexing ( FDM ), and time-division multiplexing ( TDM ).
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Abstract—Diagonal Bell Laboratories Layered Space-Time (DBLAST)
structure offers a low complexity solution to realize the
attractive capacity of Multiple-input and multiple-output (MIMO)
systems. In this paper, we apply D-BLAST in orthogonal fr
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frequency division multiplexing (OFDM) is used extensively in broadband wired and wireless communication systems because it is an effective solution to intersymbol interference (ISI) caused by a dispersive channel. This becomes increasingly important
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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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MU-MIMO is widely considered a key technology
for system capacity improvement in modern
wireless networks. In contrast to
SU-MIMO, where the spatial multiplexing gain
is confined to a single user, MU-MIMO allows
multiple users to be co-sche
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Signal identification represents the task of a receiver
to identify the signal type and its parameters, with applications
to both military and commercial communications. In this paper,
we investigate the identification of spatial multiplexing (
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We present a novel beamforming technique
for multi-user frequency-selective indoor channels called
interference-nulling time-reversal (INTR). The beamformer is
implemented with a pre-filter designed to minimize the interuser
interference pres
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基于OQAM/PDM CO-OFDM系统提出了一种时域的信道估计方法，可以有效提高估计效率。
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