Search - multiple access

[Program doc] How_CDMA_works

Description: Basic CDMA Principles • Coding • Forward and Reverse Channels CDMA Operational Details • Multiplexing, Forward and Reverse Power Control CDMA Handset Architecture CDMA Handoffs CDMA Network Architecture CDMA Messaging and Call Flow Optional Topics Wireless Multiple Access Technologies Overview of Current Technologies • Capacity CDMA Overlays, Spectrum Clearing- Basic CDMA Principles • Coding • Forward and Reverse Channels CDMA Operational Details • Multiplexing, Forward and Reverse Power Control CDMA Handset Architecture CDMA Handoffs CDMA Network Architecture CDMA Messaging and Call Flow Optional Topics Wireless Multiple Access Technologies Overview of Current Technologies • Capacity CDMA Overlays, Spectrum Clearing
Platform: | Size: 1091584 | Author: Mohsen | Hits:

[SCM] CC1110_FDMA

Description: 附件内文件功能是利用TI公司的CC1110单片机实现点对多点频分多址FDMA。程序在IAR7.2软件平台下编译通过，可以在CC1110单片机中正常下载运行。-Within the file attachment feature is the use of TI s CC1110 MCU-to-multipoint frequency division multiple access FDMA. Under the program compiled by IAR7.2 software platform, you can download the CC1110 MCU to normal operation.
Platform: | Size: 153600 | Author: mutestome | Hits:

[Program doc] DurraniThesis

Description: a brief introduction to the concept and application of smart antennas for Code Division Multiple Access (CDMA) systems is presented. Following some introductory remarks in Section 1.1, the basic definition and classification of smart antennas is presented in Section 1.2. Key system aspects influencing the performance of smart antennas are also addressed in this section. The aims of this thesis are then identified in Section 1.3. In light of the thesis aims, a literature survey is presented in Section 1.4 which forms the basis of the work presented in this thesis and covers the topics of (i) interference rejection capabilities of array antennas, (ii) channel modelling for smart antennas, (iii) performance analysis of smart antennas for CDMA systems, (iv) adaptive beamforming algorithms for smart antennas and (v) hybrid smart antenna applications. The main thesis contributions are presented in Section 1.5. Finally, the thesis organisation is described in Section 1.6.
Platform: | Size: 1182720 | Author: mansoor | Hits:

[Algorithm] IDMAparallel

Description: Simulating Interleave Division Multiple Access technique using parallel receiver in Matlab environment
Platform: | Size: 2048 | Author: Nabil | Hits:

[Algorithm] ICDMA

Description: Simulating Interleave Coded Multiple Access technique on Matlab environment
Platform: | Size: 2048 | Author: Nabil | Hits:

[Algorithm] IDMAgold

Description: Simulating Interleave Division Multiple Access technique using Gold coding on Matlab environment
Platform: | Size: 1024 | Author: Nabil | Hits:

[Program doc] Lab01_Ethernet

Description: The Ethernet is a working example of the more general Carrier Sense, Multiple Access with Collision Detect (CSMA/CD) local area network technology. The Ethernet is a multiple-access network, meaning that a set of nodes sends and receives frames over a shared link. The “carrier sense” in CSMA/CD means that all the nodes can distinguish between an idle and a busy link.
Platform: | Size: 363520 | Author: vagazone | Hits:

[File Format] channel-estimation-SCFDMA

Description: channel estimation is single carrier frequency division multiple access also called as DFT spread OFDM.
Platform: | Size: 749568 | Author: dude | Hits:

[Other] CDMA_versus_IDMA

Description: Beyond third generation (B3G) and fourth generation (4G) communication systems require bandwidth efficiency and low complexity receivers to accommodate high data rate and large number of users per cell. This paper provides the recommendations for why Interleave Division Multiple Access (IDMA) stands out among all the present day multiple access systems. Even if IDMA is a special case of Code Division Multiple Access (CDMA), it simply trounces CDMA as far as the cell capacity is concerned. In IDMA, interleavers are used as the only means for user separation. Interleaver size can be varied for a set of users but the recommended interleaver size is 1024bits at which it provides better efficiency and minimum processing delay. Investigations carried throughout this paper are while using 1024 bit interleavers. IDMA exhibits the tendency to handle huge number of users.
Platform: | Size: 366592 | Author: raghaw | Hits:

[Communication-Mobile] 802.3-2005_section4

Description: IEEE 802.3 2005 Section 4 (English) Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) access method and physical layer specifications
Platform: | Size: 1786880 | Author: bassa | Hits:

[Other] IDMA_Systems

Description: Beyond third generation (B3G) and fourth generation (4G) communication systems require bandwidth efficiency and low complexity receivers to accommodate high data rate and large number of users per cell. This paper provides the recommendations for why Interleave Division Multiple Access (IDMA) stands out among all the present day multiple access systems. Even if IDMA is a special case of Code Division Multiple Access (CDMA), it simply trounces CDMA as far as the cell capacity is concerned. In IDMA, interleavers are used as the only means for user separation. Interleaver size can be varied for a set of users but the recommended interleaver size is 1024bits at which it provides better efficiency and minimum processing delay. Investigations carried throughout this paper are while using 1024 bit interleavers. IDMA exhibits the tendency to handle huge number of users.
Platform: | Size: 268288 | Author: raghaw | Hits:

[matlab] rakeica_sumee_matlab

Description: rake ica receiver This program generates the Walsh Functions and does the job of a Code Division Multiple Access (CDMA) Transmitter and Receiver -rake ica receiver This program generates the Walsh Functions and does the job of a Code Division Multiple Access (CDMA) Transmitter and Receiver
Platform: | Size: 1024 | Author: Sumeet M | Hits:

[Windows Develop] Consume

Description: 一个小型的家庭收支管理，可以设支出项目、可以设多个用户，可以对比多个用户支出图分析等。VB2005+access,密码123456 -A small family income and expenditure management, you can set up expenditure items, you can set up multiple users, multiple users can compare spending plan analysis. VB2005+ access, password 123456
Platform: | Size: 305152 | Author: Fitzz | Hits:

[matlab] CDMA

Description: it is a code in MATLAB for calculation of bit error ratio vs signal to noise ratio , for multiuser code division multiple access .. usually in any communication system calculation of BER is very important to know the performance of system .. so in this program multiuser CDMA system is used ,, spreading is done using HADAMARD matrix .. or WALSH code .. and BER vs SIGNAL to NOISE ratio graph is computed-it is a code in MATLAB for calculation of bit error ratio vs signal to noise ratio , for multiuser code division multiple access .. usually in any communication system calculation of BER is very important to know the performance of system .. so in this program multiuser CDMA system is used ,, spreading is done using HADAMARD matrix .. or WALSH code .. and BER vs SIGNAL to NOISE ratio graph is computed
Platform: | Size: 2048 | Author: hassan | Hits:

[Program doc] 5989-8309EN

Description: This application note is intended for engineers developing and testing mobile or subscriber stations (MS or SS) and their components, based on the IEEE 802.16e orthogonal frequency division multiple access (OFDMA) amendment to the 802.16-2004 standard. These devices are intended for the Mobile WiMAX market.
Platform: | Size: 2606080 | Author: Tekaya | Hits:

[Software Engineering] DegreesofFreedomfortheMIMOInterferenceChannel

Description: 文章主要技术要点：广播，自由，干扰度，MIMO技术，多址接入，迫零算法-The main technical points of the article:Broadcast, Degrees of Freedom, Interference, MIMO, Multiple Access, Zero Forcing
Platform: | Size: 178176 | Author: zhanglong | Hits:

[Other] tx

Description: 第一章移动通信的基本概念和发展第二章蜂窝的概念与系统设计第三章移动通信信道环境特点第四章移动通信中的调制解调技术第五章均衡、分集和信道编码技术第六章无线多址技术第七章集群通信系统 -First chapter the basic concepts of mobile communications and development of the concept of cellular Chapter II Chapter III with the system design environment for mobile communication channel characteristics of mobile communications in the fourth chapter of the modulation and demodulation techniques Chapter balance, diversity and channel coding technology Chapter VI Wireless Multiple Access Chapter VII of the trunking communication system
Platform: | Size: 48433152 | Author: 阿郎 | Hits:

[Other] synchronisati_on_for_OFDMA_tuto_rial_by_2

Description: Synchronization Techniques for Orthogonal Frequency Division Multiple Access (OFDMA): A Tutorial Review
Platform: | Size: 1496064 | Author: eng_dina | Hits:

[Windows Develop] jiangqiufeng_09720835

Description: Ethernet帧的发送采用带有冲突检测的载波侦听多路访问（CSMA/CD）方法。CSMA/CD的发送流程可以概括为以下四点：先听后发，边听边发，冲突停止，延迟重发。当其中检测到冲突时就需要考虑如何处理该冲突。本程序提出了一种冲突退避算法。-Ethernet frames to send used with Collision Detection Carrier Sense Multiple Access (CSMA/CD) method. CSMA/CD the sending process can be summarized as the following four points: first, hear hair, listened hair, the conflict to stop, delay re-issued. When one detects a conflict between the need to consider how to deal with the conflict. This experiment presents a conflict of backoff algorithm. And through programming the algorithm.
Platform: | Size: 906240 | Author: 王衎 | Hits:

[Other] cdma

Description: 基于MATLAB的多址接入协议CDMA仿真。-MATLAB-based multiple access protocol for CDMA simulation.
Platform: | Size: 80896 | Author: 罗小英 | Hits:

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