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31121-4d0
3gpp关于usim应用测试指导规范,通用的,不光是td scdma(rd Generation Partnership Project
Technical Specification Group Core Network and Terminals
UICC-terminal interface
Universal Subscriber Identity Module (USIM)
application test specification
(Release 4)
)
- 2013-05-01 10:54:48下载
- 积分:1
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vhdl按键检测
基于vhdl的按键检测程序。可以有效消除抖动(vhdl key dectect program)
- 2018-02-26 23:48:35下载
- 积分:1
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10285713
说明: 对语音编码技术的特点进行了分析与研究, 对波形编码,声码器和混合编码三种主要 的语音编码进行了比较, 并介绍了GSM 和CD(This paper analyzes and studies the characteristics of speech coding technology, compares the three main speech codes: waveform coding, vocoder and hybrid coding, and introduces GSM and CD.)
- 2019-03-27 23:52:25下载
- 积分:1
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RFC826
中文RFC文档,不用翻译,对大家学习很有帮助!(Chinese RFC documents, without translation, the right to study very helpful!)
- 2005-04-12 13:23:37下载
- 积分:1
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report2008
说明: 中国的手机游戏市场用户调研报告2008年度(China mobile phone game market research report of 2008 users)
- 2009-07-22 15:06:40下载
- 积分:1
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一种基于高阶累积量的数字调相信号识别方法
说明: 对当前通信信号中常用的数字调相信号BPSK、QPSK、1/4一QPSK、8PSK的调制识别问题,提出了一种基于信号差分高阶累积量的识剐算法。该算法分两个层次进行调制识别,首先利用信号的四阶累积量特征对BPSK、QPSK和{1/4一QPSK、8PSK}信号进行识别,然后再利用信号差分的四阶和八阶累积量特征对1/4-QPSK、8PSK信号进行识别。从理论上分析了的该算法的有效性,并通过计算机仿真验证了算法具有良好的性能。(A recognition algorithm based on differential high-order cumulant is proposed for the modulation recognition problems of BPSK, QPSK, 1/4-QPSK and 8PSK, which are commonly used in current communication signals. The algorithm is divided into two levels for modulation recognition. Firstly, BPSK, QPSK and {1/4-QPSK, 8PSK} signals are identified by using the fourth-order cumulant characteristics of signals, and then 1/4-QPSK and 8PSK signals are identified by using the fourth-order cumulant and eighth-order cumulant characteristics of signal difference. The validity of the algorithm is analyzed theoretically, and the good performance of the algorithm is verified by computer simulation.)
- 2020-06-21 09:40:02下载
- 积分:1
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基于压缩感知的MASSIVE MIMO信道估计
基于压缩感知的MASSIVE MIMO信道估计,采用OMP算法解决稀疏信道估计问题。MASSIVE MIMO多小区多用户模型,合成稀疏信道(有效解决导频污染)。(Based on compressed sensing for MASSIVE MIMO channel estimation, OMP algorithm is used to solve the sparse channel estimation problem. MASSIVE MIMO multi cell and multi-user model, to synthesize sparse channel (effectively solve pilot pollution).)
- 2021-04-12 20:28:56下载
- 积分:1
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BER_OFDM_OQAM
基于MATLAB的OFDM/OQAM调制系统的仿真与误码率测试(Simulation and BER MATLAB the OFDM/OQAM modulation system test)
- 2020-07-02 18:00:02下载
- 积分:1
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CCK_by_cd
CCK通过AWGN信道时的误码率曲线,已通过上机验证(CCK调制和利用快速沃尔什变化解调)(CCK through AWGN channel, BER curve has passed-on authentication)
- 2021-03-09 09:49:28下载
- 积分:1
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try_doa_music
说明: 基于均匀线阵的强干扰条件下弱信号的DOA估计,采用MUSIC算法(Based on the DOA estimation of weak signal under strong interference of uniform linear array, music algorithm is adopted)
- 2020-11-23 20:59:33下载
- 积分:1