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基于自适应调制编码的OFDM系统的研究文章-Adaptive Modulation and Coding for OFDM Systems
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Abstract—In this paper we present an initial performance
evaluation of the 3GPP UTRA Long Term Evolution (UTRA
LTE) uplink with baseline settings. The performance results
are obtained from a detailed UTRA LTE uplink link level
simulator suppo
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AF协作分集信道与M-QAM自适应调制技术的系统频谱效率分析-AF cooperative diversity channels with M-QAM adaptive modulation spectral efficiency of the system
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本文提出了数字与模拟
相结合的自适应对消方案。通过对发射天线耦合过来的参考信号进行采样，转
换为数字信号后输入信号处理器中经调幅调相处理，再经过DAC转换并放大
后和接收机接收干扰信号相抵消，抵消残留信号再采样转换为数字信号后输入
到信号处理器中调整调幅调相的权值，重复上述过程，形成模拟和数字相结合
的自适应干扰抵消，最终使干扰噪声得到了衰减。
-This paper presents a combination of digital and analog adaptiv
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Abstract— We propose a simple speech compression algorithm
using subband division and ADPCM (Adaptive Differential
Pulse Code Modulation) algorithm. Although speech data are
stored in a semiconductor memory device, its capacity and the
availa
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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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To improve the performance of short-range wireless communications, channel quality must
be improved by avoiding interference and multi-path fading. Frequency hopping spread
spectrum (FHSS) is a transmission technique where the carrier hops freque
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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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Kite codes, which were originally defined over the
binary field, are generalized to arbitrary abelian groups in this
paper. Kite codes are a special class of prefix rateless codes over
groups, which can generate potentially infinite (or as many
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The main objective of this research to implement, and analysis of WiMAX model with different modulation and coding schemes, Adaptive Modulation and Coding (AMC) using OPNET network modeler. By expressing the different types of modulation and coding m
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一些自适应信号处理的算法，是本科毕设的题目，包括调制，解调，信噪比计算。- Some adaptive signal processing algorithms, The title of the commercial is undergraduate course you Includes the modulation, demodulation, signal to noise ratio calculation.
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