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让WiMAX在新兴科技市场中发挥作用

无线通信系统正变得越来越复杂,使用更高频率和更大带宽,以支持高速通信,IEEE802.16 WiMAX就是一个例子。

 

当开发WiMAX设备时,工程师必须保证其工作在高频的WiMAX频段。在制造阶段,设备必须要经过测试。一旦安装运行后,WiMAX发射和接收设备又面临着天线和发射器件调谐以及无线电干扰等挑战。

 

以上这些情况要求新一代的WiMAX测试仪器,能应对WiMAX的高频率和宽带特性,而且要能支持不同区域中WiMAX设备的特性和不同频率。

 

WiMAX市场中安立的角色

安立是无线通信设备的研发、综测、制造、维护仪器供应商中的领跑者。安立承诺提供WiMAX的完整解决方案,保证WiMAX设备商和运营商紧跟最新的标准,并能将产品更快投入市场。

 

安立是WiMAX论坛的活跃成员,产品在TWG(技术工作组)和Plugfests(互通测试)中展示。其中,MG3700A矢量信号源和MS2781B矢量信号分析仪被列入推荐产品目录

 

此区域设计为一站式选择WiMAX测试仪器,用于移动、固定WiMAX基站和天线安装以及后续维护工作。这里您能找到新闻,技术文档,在线学习,和安立的最新产品。将本页面添加为书签!

Primer

A WiMAX Primer
WiMAX, the Worldwide Interoperability for Microwave Access (WiMAX) is a telecommunications communications technology based on wireless transmission methods defined by the IEEE 802.16 air interface standard. Intended for Wireless Metropolitan Area Networks (WirelessMan), it can provide broadband wireless access at distances up to 30 miles for fixed stations, and up to 10 miles for mobile stations.

Potential WiMAX uses include high-speed mobile data and telecommunications services (e.g. 4G) providing a wireless alternative to cable and DSL for last-mile broadband access and connecting Wi-Fi hotspots with each other and with the internet.

To meet the requirements of different types of access, two versions of WiMAX have been defined. Both are engineered to help deliver ubiquitous, high-throughput broadband wireless services at a low cost.

Fixed WiMAX (defined in IEEE 802.16-2004) is popular with alternative service providers and operators in developing areas due to low cost of deployment, advanced performance, and ready availability of current products. Fixed WiMAX is also a possibility for backhaul of wireless base stations such as cellular, WiFi and other technologies.

Mobile WiMAX (defined in IEEE 802.16e-2005 and often referred to as "802.16e") improves on the modulation schemes defined in the Fixed WiMAX standard, and offers improved multipath performance in non-line-of-sight (NLOS) environments enabled by the adoption of SOFDMA (Scalable Orthogonal Frequency Division Multiple Access) technology. The enhancements offered over Fixed WiMAX can be attributed to many features including the following:

  • Improved robustness through coverage by the use of antenna diversity techniques and HARQ (Hybrid Automatic Repeat Request)
  • Use of sub-channelization to improve multipath performance
  • Enhanced data security and date recovery performance through the use of coding techniques such as Convolutional Coding and Convolutional Turbo Coding
  • Improved performance coverage by the use of Adaptive Antenna Systems (AAS) and Multiple Input Multiple Output (MIMO) technology.

Products

通过式峰值功率计 MA24105A

MA24105A

350 MHz — 4 GHz

USB 功率传感器(平均功率) MA24106A

MA24106A

50 MHz ~ 6 GHz

微波 USB 功率传感器 MA24108A

MA24108A

频率: 10 MHz ~ 8 GHz

微波 USB 功率传感器 MA24118A

MA24118A

频率: 10 MHz ~ 18 GHz

MA2411B

300 MHz ~ 40 GHz

微波 USB 功率传感器 MA24126A

MA24126A

Microwave USB Power Sensor
10 MHz - 26 GHz frequency
True RMS Measurements

MA244xD 系列

10 MHz ~ 50 GHz

MA247xD 系列

10 MHz ~ 50 GHz

MA248xD 系列

10 MHz ~ 18 GHz

Universal Power Sensors (Average) MA248xD Series

MA249xA 系列

50 MHz ~ 18 GHz

ML2437A

90 dB 动态范围

ML2438A

ML2438A

宽带峰值功率计 ML2487B

ML2487B

取决于所用的传感器

宽带峰值功率计 ML2488B

ML2488B

取决于所用的传感器

宽带峰值功率计 ML2495A

ML2495A

取决于所用的传感器

宽带峰值功率计 ML2496A

ML2496A

取决于所用的传感器

高精度功率传感器(平均功率) PSN50

PSN50

50 MHz - 6 GHz

手持式频谱分析仪 MS2712E

MS2712E

频率范围为 100 kHz ~ 4 GHz 的频谱分析仪

 手持式频谱分析仪 MS2713E

MS2713E

Handheld Spectrum Analyzer
9 kHz - 6 GHz frequency
1 Hz - 3 MHz resolution bandwidth

频谱分析仪 MS2720T

MS2720T

Handheld Spectrum Analyzer
9 kHz - 9 GHz, 13 GHz, 20 GHz,
32 GHz, 43 GHz frequency

Cell Master 紧凑型基站分析仪 MT8213E

MT8213E

频率为 100 KHz 到 6 GHz 的频谱分析仪频率为 2 MHz 到 6.0 GHz 的电缆 & 天线分析仪

BTS Master MT8820T

MT8220T

Base Station Analyzer
400 MHz - 6 GHz VNA frequency
150 kHz - 7.1 GHz SPA frequency

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