WiMAX - General Information About The Standard 802.16

This application note is one of three papers dealing with the WiMAX standard, covering the theoretical aspects of WiMAX. It gives a detailed overview of the basic concepts of WiMAX (FFT, OFDM, frame structures, etc.) and explains the physical standard parts of IEEE 802.16 standards 802.16/2004, corr1, and 802.16e. Article

An Introduction To WiMAX Measurements

The new WiMAX radio technology -- worldwide interoperability for microwave access -- is based on wireless transmission methods defined by the IEEE 802.16 standard. WiMAX has been developed to replace broadband cable networks such as DSL and to enable mobile broadband wireless access. Rohde & Schwarz offers a complete test solution for WiMAX applications by combining its Signal Generator R&S SMU200A and Signal Analyzer R&S FSQ plus the appropriate options. Article

Understanding The Performance Of RF Amplifiers Used In Base Station Applications

n order to properly configure a base station transceiver, designers must understand the performance parameters of the RF amplifiers being used. This not only includes the standard parameters such as gain, noise figure, P1dB, and IP3, but also includes more subtle parameters, including spectral re-growth and power efficiency. The performance of various types of amplifiers will be analyzed in this article to illustrate the advantages and tradeoffs of each type. Also, performance will be analyzed under various bias conditions to understand the tradeoffs between ACPR/ACLR (adjacent channel power) and power efficiency. The article will compare various types of RF amplifiers including GaAs MESFET, InGaP HBT, and GaAs HFET amplifiers. Article