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认知无线电网络
应用背景最近，认知无线电技术已经被提出作为未来的无线通信的关键技术利用动态频谱接入策略的通信。这提供了更灵活的方式利用无线基于固定频谱接入策略的频谱比传统无线电技术。认知无线电网络（CRNs），获得信道频谱空洞的信息，谈判的主用户和次之间用户对频谱分配、同步传输参数是铬介质访问的重要功能控制协议。在本文中，我们讨论了MAC层的基本职责和CRN的功能。基本上，我们专注于调查的最新进展，在铬麦克协议，以及它们的特点特点，优点和缺点。最后，我们提供了这些协议以表格形式的主要特点。关键技术认知无线电中的动态频谱接入网络仍处于起步阶段。许多重要的和复杂问题需要解决。在本文中，我们提供了一个调查，一些铬麦克协议并讨论了它们的主要工作原理结合自身特点。
- 2022-08-21 09:57:21下载
- 积分：1
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6-551JFall-2004_AcousticsofSpeechandHearing， MIT 公开课程中非常经典的语音处理课程，对于从事语音信号处理的tx非常有参考价值。-6-551JFall-2004_AcousticsofSpeechandHearing, MIT open courses deal with a very classic voice curriculum, for the tx audio signal processing is a valuable reference.
- 2023-09-06 19:55:05下载
- 积分：1
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此为一款基于J2ME的手机游戏，《重装机兵》源代码，本源码并未在手机上测试，可以编译成功。这款游戏基本实现了必须的所有功能，如碰撞探测、地图转换、NPC对话、事...
此为一款基于J2ME的手机游戏，《重装机兵》源代码，本源码并未在手机上测试，可以编译成功。这款游戏基本实现了必须的所有功能，如碰撞探测、地图转换、NPC对话、事件处理,、横版回合制战斗系统等，并根据原游戏的特色加入了人、车两战斗系统，在玩的过程中，你可以用方向键控制人物行走；回车键弹出游戏菜单，"1"键进行命令取消。-This is a J2ME-based mobile phone games, the " capacity of soldiers," the source code, the source has not been tested on cell phone, you can compile successfully. The basic implementation of the Games must be all the features such as collision detection, map conversion, NPC dialogue, handle case, cross-version of turn-based combat system, and in accordance with the characteristics of the original game by adding the person, the two fighting vehicle system, playing process, you can use the arrow keys to control the character walk Games Enter the pop-up menu, " 1 " key to cancel the order.
- 2022-01-25 19:57:56下载
- 积分：1
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一个特别适用于单片机调试的通用串口通讯软件。可以发送和接受ASCII和HEX（二进制）代码，在MCU方式下自动转换Parity:发送地址时Parity=M,发送...
一个特别适用于单片机调试的通用串口通讯软件。可以发送和接受ASCII和HEX（二进制）代码，在MCU方式下自动转换Parity:发送地址时Parity=M,发送数据Parity=S，同时可以定时发送数据。也可以作为通用串口调试工具。-a particularly applicable to the common debugging MCU serial communication software. Can send and receive ASCII and HEX (binary) code, the MCU mode automatically converted Parity : Send address Parity = M, send data Parity = S, and can send data regularly. GM also can be used as serial debugging tools.
- 2023-04-15 05:20:03下载
- 积分：1
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不错的客户端连接程序，希望大家喜欢，里面是一个客户端的程序，一会会提供服务端的程序...
不错的客户端连接程序，希望大家喜欢，里面是一个客户端的程序，一会会提供服务端的程序-good client procedures in the hope that everyone likes, there is a client process, will provide a service side of the process
- 2023-07-13 16:40:03下载
- 积分：1
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系统基于 .NET 框架开发，使用前请确认电脑里是否已安装 .NET 框架组件及数据访问组件。...
系统基于 .NET 框架开发，使用前请确认电脑里是否已安装 .NET 框架组件及数据访问组件。-based system.NET Framework development, Please confirm before use computer has been installed.NET framework components and data access components.
- 2022-05-22 12:20:23下载
- 积分：1
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基于P2P的多媒体广播源代码，类似ppstream和pplive，非常有参考价值...
基于P2P的多媒体广播源代码，类似ppstream和pplive，非常有参考价值-P2P multimedia broadcasting source code, and similar ppstream pplive, very valuable reference
- 2022-06-17 23:36:09下载
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In this simulink model , BPSK modulation and demodulation is simulated .A square...
In this simulink model , BPSK modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal
is demodulated and given to the detector where it is matched filtered and down-sampled .The effects of symbol timing offset
can be seen by varying the phase of down-sampling
operation.The signal transmitted is recovered
at the detector output.-In this simulink model , BPSK modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal
is demodulated and given to the detector where it is matched filtered and down-sampled .The effects of symbol timing offset
can be seen by varying the phase of down-sampling
operation.The signal transmitted is recovered
at the detector output.
- 2023-08-21 07:40:03下载
- 积分：1
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使用3Com USR Modem进行录音和放音
使用3Com USR Modem进行录音和放音 -Modem program Using 3Com USR Modem
- 2022-03-21 20:06:45下载
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微软亚洲研究院论文：IEEE802.11无线局域网MAC的性能分析
微软亚洲研究院论文：IEEE802.11无线局域网MAC的性能分析-Microsoft Asia Research Institute Papers : IEEE 802.11 wireless LAN MAC Performance Analysis
- 2022-07-20 01:52:28下载
- 积分：1
