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语音编码为信源编码,是将模拟信号转变为数字信号,然后在信道中传输。在数字移动通信中,语音编码技术具有相当关键的作用,高质量低速率的话音编码技术与高效率数字调制技术相结合,可以为数字移动网提供高于模拟移动网的系统容量。目前,国际上语音编码技术的研究方向有两个:降低话音编码速率和提高话音质。-Speech coding for source coding is the analog signal into a digital signal, and then in the channel trans
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Arbitrary transmitting antenna, receiving antenna arbitrary STBC-MIMO-OFDM the MATLAB program, including the integrity of PSK modulation, STBC encoding, such as channel estimation.
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专门的无线信道调制和编码解码资料,适合无线通信学习-Dedicated radio channel modulation and encoding and decoding data for wireless communication learning
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利用matlab simulink产生两路模拟语音信号,经过pcm编码、时分复用、DPSK调制经过同一个信道单向传输到对应的接收端。常用的三个模块 simulink、通信模块、信号处理模块。包括课程设计报告。-Using matlab simulink produce two analog voice signals through the pcm encoding, time division multiplexing, DPSK modulation over the same one-wa
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关于4DPSK调制中的差分编码,以及4dpsk的解码-4DPSK differential modulation encoding and decoding
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NFC MIFARE FELICA S50 S70 P2P ID卡 动物标签 18092 14443 技术详细介绍
(1)——概念、分类
(2)——国际标准
(3)——能量、调制
(4)——数据编码
(5)——防冲突
(6)——通讯协议概述
(7)——ID卡
(8)——动物标签
(9)——动物标签HDX
(10)——识别号的格式变化
(11)——Mifare系列卡的共性
(12)——三次相互认证
(13)——Mifare S50与Mifare
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Modulation is the process of encoding information a
message source in a manner suitable for transmition.
The ultimate goal of a modulation technique is to transport the
message signal through a radio channel with the best pos
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基于OFDM的LTE下行链路:
包括main、预编码、分层映射、调制、ofdm-LTE downlink based on OFDM:
Including main, pre encoding, hierarchical mapping, modulation, OFDM
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