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Description: 这是一个关于GMS系统的Matlab仿真，信息经过外编码，内编码，重排交织以及信道然后再解码，最后可以估计GSM系统的性能。-This is one of the GMS system Matlab simulation, and information through outside coding, coding, re-cutting and channel decoder then, the final estimate GSM system performance.
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Size: 11757 |
Author: yuxin |
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Description: 依据GSM 05.03建议，在高斯干扰和突发干扰下，对业务信道中的全速率语音信道TCH/FS信道做了编码研究，并作信噪误码性能的仿真-based on GSM 05.03, in Gaussian interference and unexpected interference, the right business channel Full-rate voice channels TCH/FS channel coding done a study and make noise letter Error Performance Simulation
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Size: 10240 |
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Description: 这是一个关于GMS系统的Matlab仿真，信息经过外编码，内编码，重排交织以及信道然后再解码，最后可以估计GSM系统的性能。-This is one of the GMS system Matlab simulation, and information through outside coding, coding, re-cutting and channel decoder then, the final estimate GSM system performance.
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Size: 11264 |
Author: yuxin |
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Description: 基于MATLAB的GSM仿真系统 并附有直接画出性能曲线的简化程序。-GSM based on MATLAB simulation system with a direct paint performance curve of a simplified procedure.
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Size: 395264 |
Author: 顾虑 |
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Description: GSM TCH/FS 信道编码仿真
仿真通信系统包括内外编码器、交织重排器、加性/突发或混合干扰信道、去交织反重排器、内外译码器，模拟了信息从信源到信宿的全过程；
在高斯噪声、突发干扰或混合信道下测试每个步骤对误码率和系统性能的影响，通过数字及图形的比较，得出通信系统中各个模块的作用。-GSM TCH/FS channel coding simulation Simulation of communication systems, including internal and external encoder, interleaving rearrangement, and additive/sudden or mixed channel interference, de-interlacing anti-rearrangement, and internal and external decoder, analog information from the source to the letter places the entire process in Gaussian noise, sudden disruption or mixed channel to test each step of the bit error rate and system performance, through the figures and graphics comparison, the communication system in the role of each module.
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Size: 45056 |
Author: 123456 |
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Description: 是3GPP中GSM最重要的标准,业内简称GSM0505.
这个标准详细规定了GSM发射与接收技术,其中GMSK,8-PSK,BS、MS各种射频性能指标都是在05系列文档中成为行业标准的.
虽是英文，但内容都狠简单，仔细阅读会对理解GSM物理层标准有很大帮助，是无线通信行业人员的必备文档。-GSM is the most important in the 3GPP standards, the industry referred to as GSM0505. This standard details the launch and receiving GSM technology, which GMSK ,8-PSK, BS, MS a variety of RF performance indicators are in the 05 series of documents to become the industry standard . Although it is in English, but the contents are hard simple read on understanding of GSM physical layer standards are very helpful, the wireless communications industry personnel necessary documents.
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Size: 703488 |
Author: 王青 |
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Description: gsm通信中，成功应用了gmsk调制，该模块用simulink实现gmsk调制及其性能测试，-gsm communication, the successful application of the GMSK modulation, the module using simulink realization of GMSK modulation and its performance testing,
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Size: 7168 |
Author: yxj |
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Description: 两台处理机A 和B处理n个作业。设第i个作业交给机器
A 处理时需要时间ai，若由机器B 来处理，则需要时间bi。由于各作
业的特点和机器的性能关系，很可能对于某些i，有ai >=bi，而对于
某些j，j!=i，有aj<bj。既不能将一个作业分开由两台机器处理，也没
有一台机器能同时处理2 个作业。设计一个动态规划算法，使得这两
台机器处理完成这n 个作业的时间最短（从任何一台机器开工到最后
一台机器停工的总时间）。研究一个实例：（a1,a2,a3,a4,a5,a6）=
（2,5,7,10,5,2）；（b1,b2,b3,b4,b5,b6）=（3,8,4,11,3,4）-Two processors A and B deal with n-operation. I set up the first operating the machine A treatment takes time ai, if by machine B to deal with, it takes time bi. Since the operating characteristics and performance of the machine relationship, is likely to for some i, there is ai> = bi, and for some j, j! = I, there is aj <bj. Neither can an operation separate from the two machines to deal with, nor a machine capable of simultaneously handling two operations. Design a dynamic programming algorithm, making the two machines to deal with the completion of this n the shortest operating time (from any one machine starts to the last machine downtime total time). Study an example of: (a1, a2, a3, a4, a5, a6) = (2,5,7,10,5,2) (b1, b2, b3, b4, b5, b6) = (3,8 , 4,11,3,4)
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Size: 14336 |
Author: 王颖 |
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Description: 本设计充分利用了GSM模块功能，将现有汽车防盗技术与GSM相结合，实现了一种更为安全、可靠、实用防盗方案，充分发挥步进电机和单片机技术的优势，实现了一种低成本的电子巡航控制系统（CCS）,让驾驶员充分享受匀速行驶的乐趣,同时也改善了汽车的燃料经济性和排放性能。-The design makes full use of GSM module, the existing GSM car alarm technology and combined to achieve a more secure, reliable, practical anti-theft program, give full play to the stepper motor and single-chip technology, to achieve a kinds of low-cost electronic cruise control system (CCS), allowing the driver to fully enjoy the fun of traveling uniform, but also improved the car s fuel economy and emissions performance.
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Size: 202752 |
Author: 囧明 |
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Description: 本教程是设计一个用于1900MHz GSM的RF接受系统 包含许多高性能指标-This is to design a tutorial for the RF acceptance 1900MHz GSM system contains many high-performance indicators
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Size: 428032 |
Author: tangkai |
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Description: 基于小波域隐马尔可夫模型的图像降噪，性能最好的图像降噪程序。
-Based on wavelet-domain Hidden Markov Model of image noise, the performance of the best image noise reduction procedures.
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Size: 1403904 |
Author: 蒲秀娟 |
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Description: 所谓短信猫，其实是一种工业级级GSM MODEM，通过串口与计算机连接，可以通过AT 指令控制进行短信收发的设备。国内目前应用较多的短信猫，都是以SIEMENS 或WAVECOM 模块为核心组装而成的，与普通手机相比更为稳定高效。-The so-called SMS cat is a kind of industrial-level GSM MODEM, connected through the serial port and the computer can be carried out through the AT commands to control the device to send and receive text messages. At present the application of the domestic cat more messages are to WAVECOM module SIEMENS or assembled at the core, and more stable compared to the ordinary high-performance mobile phones.
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Size: 219136 |
Author: more |
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Description: This a simulator written in Tcl to simulate a network node carrying GSM and GPRS traffics with QoS mechanisms. The payload type including circuit-switched voice, VoIP and web traffic, and the performance including packet drop, delay can be analyzed. The implemented QoS mechanism is DiffServ, with 4 RED queues for different services with different priorities.-This is a simulator written in Tcl to simulate a network node carrying GSM and GPRS traffics with QoS mechanisms. The payload type including circuit-switched voice, VoIP and web traffic, and the performance including packet drop, delay can be analyzed. The implemented QoS mechanism is DiffServ, with 4 RED queues for different services with different priorities.
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Size: 26256384 |
Author: wang haibo |
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Description: 本文在充分研究了西门子公司 MC35 GSM 模块的性能后 ,总结出一套利用 GSM 网络进行信息传输的技术 ,包括GSM模块的初始化 ,短信的收发与群发 , SIM卡电话本的管理等 ,并提出一种灵活的接收或读取短信的方案 ,最后给出了应用实例。-In this paper, a thorough study of the Siemens MC35 GSM module performance, the summary of a GSM network using messaging technologies, including GSM module initialization, to send and receive text messages and mass, SIM card phone book management, etc. and to make or receive a flexible program to read text messages, and finally application example is given.
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Size: 343040 |
Author: verve |
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Description: MT6225 GSM/GPRS Baseband Processor Data Sheet
The MT6225 is a highly integrated single chip solution for
GSM/GPRS phone. Based on 32-bit ARM7EJ-STM RISC
processor, MT6225 features not only high performance
GPRS Class 12 MODEM but is also designed with support
for the wireless multi-media applications, such as
advanced display engine, synthesis audio with 64-tone
polyphony, digital audio playback, Java acceleration,
MMS and etc. Additionally, MT6225 provides varieties of
advanced interfaces for functionality extensions, like
3-port external memory interface, 3-port 8/16-bit parallel
interface, NAND Flash, IrDA, USB and MMC/SD/MS/MS
Pro.
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Size: 5817344 |
Author: HardWareMan |
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Description: The MT6225 is a highly integrated single chip solution for
GSM/GPRS phone. Based on 32-bit ARM7EJ-STM RISC
processor, MT6225 features not only high performance
GPRS Class 12 MODEM but is also designed with support
for the wireless multi-media applications, such as
advanced display engine, synthesis audio with 64-tone
polyphony, digital audio playback, Java acceleration,
MMS and etc. Additionally, MT6225 provides varieties of
advanced interfaces for functionality extensions, like
3-port external memory interface, 3-port 8/16-bit parallel
interface, NAND Flash, IrDA, USB and MMC/SD/MS/MS
Pro.
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Size: 5733376 |
Author: majsi |
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Description: 通信技术发展要求蜂窝运营商必须能够支持新的3G技术，在一个充满竞争的市场机制下以合理的价格提供基于多媒体业务的无线Internet能力，本书以此为蓝图主要从3部分进行阐述：
·集中阐述了GSM系统如何完全无缝演化为支持UMTS业务的GERAN。部分内容还包括演化过程中涉及的功能、结构组成、系统统一以及3G网络提出的各种UMTS QoS要求等。
·从仿真和实际系统测试的角度阐述各种先进技术的性能。本部分全面讨论了GSM、GPRS、EDGE、AMR和支持3G业务的GERAN等系统工技术的特征和性能。同时也介绍了无线接入网络的自动规划、优化和运营方法和技术。阐述了跳频技术的自动规划和无线资源管理各参数的优化等，另外对系统出现故障或者崩溃的各种原因进行了分析。
·讨论了各种不同的3G无线技术，同时说明了GERAN在这些技术中所处的地位。分析了各种演化策略，描绘了3G多无线接入网络的场景，阐述了内在的GSM和WCDMA系统无缝融合技术。 -Communication technology requirements of the development of cellular operators must be able to support the new 3G technology, in a competitive market mechanism to provide a reasonable price of wireless multimedia services based on Internet capabilities, this book as a blueprint for the major part of from 3:
Focused on how the system completely seamless GSM Evolution UMTS business to support GERAN. Part of the contents of the course also includes the evolution of function, structure, systems, and unification of the various 3G networks UMTS QoS requirements.
Simulation and from the perspective of the actual system testing on the performance of various advanced technologies. A comprehensive discussion of this part of the GSM, GPRS, EDGE, AMR and support for 3G systems such as GERAN business techniques and performance characteristics. At the same time, also introduced an automatic wireless access network planning, optimization and operation of methods and techniques. On the automatic fre
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Author: 李东 |
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Description: GSM系统卷积码和交织编码在突发信道和AWGN信道误码特性-GSM system convolutional code and interleaved coded in the emergency channel and AWGN channel BER performance
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Author: 王浩 |
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Description: 本次设计是对GSM TCH/FS信道进行编码设计及性能仿真,仿真通信系统包括内外编码器、交织重排器、加性/突发和混合干扰信道、去交织反重排器、内外译码器，模拟了信息从信源到信宿的全过程； 在高斯噪声、突发干扰或混合信道及瑞利信道下测试每个步骤对误码率和系统性能的影响，通过数字及图形的比较，得出通信系统中各个模块的作用。另外，在GSM TCH/FS 的基础上建立GSM TCH/EFS 信道，对相应的信道环境进行仿真，得出误码率分析。-This design is the GSM TCH/FS channel encoded design and performance simulation, simulation communication system, including internal and external encoder, interleaving rearrangement device, the additive/burst and mixed interference channel, to the cutting device against rearrangement, internal and external decoding and analog information from the source to the destination of the whole process in Gaussian noise, sudden disruption or mixing channel and Rayleigh channel to test each step of the bit error rate and system performance, by comparison of digital and graphic obtained communication systems the role of each module. In addition, GSM TCH/FS based on the established GSM TCH/EFS channel, the corresponding channel environment simulation, the error rate analysis
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Author: 金莉 |
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Description: 实现 AWGN信道下的理论误码特性和仿真误码特性，GSM系统卷积码在AWGN信道的误码特性，GSM系统卷积码在突发信道和AWGN信道的误码特性，GSM系统卷积码和交织编码在突发信道和AWGN信道误码特性-AWGN channel to achieve the theoretical BER performance and simulation of BER performance, GSM system, convolutional code in AWGN channel BER performance, GSM system, convolutional code and the AWGN channel in the burst channel error characteristics, GSM system, convolutional codes and interleaved coded in the emergency channel and AWGN channel BER performance
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Size: 3072 |
Author: wheel |
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