cdma2000的系统建模及实现 包括信源编码,信道编码,扩频,调制,
The system modeling and implementation of cdma2000 include source coding, channel coding, spread spectrum, modulation, (2018-09-27, Others, 18KB, 下载1次)
这是MIMO的仿真工具,对搞通信的朋友们很有用处 (2018-06-09, Others, 264KB, 下载0次)
http://www.pudn.com/Download/item/id/1528510181229580.html信 息技术ASN 1 编码规则 第1部分 基本编码规则(BER) 正 则 编 码规则(CER)和 非 典型编码规则(DER)规范 (2018-06-01, Others, 1036KB, 下载0次)
http://www.pudn.com/Download/item/id/1527861778216935.html信源编码中的fano编码的MATALB程序实现 (2018-04-18, Others, 1KB, 下载1次)
http://www.pudn.com/Download/item/id/1523996552326538.html在matlab7 0下对信源进行qam调制的 源程序 (2018-02-01, Others, 323KB, 下载1次)
http://www.pudn.com/Download/item/id/1517464625206279.html介绍信源信道联合编码的一篇文章 做常识性了解,比较适合初学者看 (2018-01-02, Others, 353KB, 下载1次)
http://www.pudn.com/Download/item/id/1514857421286021.html
Turbo码，LDPC码（低密度奇偶校验码）均具有接近Shannon限的性能，
是目前便译码研究的热点。Turbo码在低信噪比情况下的性能优于其它各种编码
方式。而LDPC码的描述简单，具有较大的灵活性，当码长足够长时具有比Turbo
码更为良好的性能，其译码复杂度低于Turbo码。
Turbo code, LDPC code (LDPC) all have close to Shannon limit performance, it is the firm' s research focus. Turbo codes at low SNR is superior to other kinds of encoding. The simple description of LDPC codes with greater flexibility, when code length is long enough, have a much more favorable than the Turbo code performance, its decoding complexity than Turbo codes. (2010-06-18, Others, 684KB, 下载34次)
A市宽带城域网可支持高速的数据接入，直接向大楼、商业用户和住宅用户群提供各种宽带业务，支持诸如高速Internet、VPLS（LAN互连）、交互视频、远程医疗/教育等交互式业务。由于AADSL宽带用户发展迅速，随着设备容量的不断增加以及其他条件的限制，组网形式日趋复杂，设备的运行情况也各不相同，再加上各种机型之间配合上的问题，使维护中出现的问题越来越复杂和隐蔽。下面就实际维护中所遇到的三例故障，浅析宽带城域网的维护。
A municipal broadband metropolitan area network can support high-speed data access, directly to the building, business users and residential users to provide various broadband services and support, such as high-speed Internet, VPLS (LAN interconnection), interactive video, remote health care/education, etc. interactive services. AADSL as a result of the rapid development of broadband users, with increasing equipment capacity, as well as other restrictions, the network form of the growing complexity of the operation of equipment varies, together with the co-ordination between the various models of the problem, so problems in the maintenance of increasingly complex and subtle. The actual maintenance of the following that were encountered in three cases of failure, Analysis of Broadband MAN maintenance. (2008-09-18, Others, 6KB, 下载4次)
汽车电脑控制元件测试仪表使用技术手册测试篇
Automotive computer-controlled test instrumentation components using technical manuals, test papers (2008-05-18, Others, 2607KB, 下载5次)