E8869 Mobile WiMax Wireless Library The IEEE 802.16e standard, often referred to as Mobile WiMAX, specifies air interfaces for BWA systems. The standard is expected to energize the BWA industry and open many opportunities to deploy systems in applications that were previously cost-prohibitive. Mobile WiMAX utilizes roaming and handoff to enable laptop and mobile phones operation. The Mobile WiMAX wireless library provides preconfigured simulation setups, signal sources and fully coded BER analysis for simulation of the circuitry used in mobile BWA designs. The Mobile WiMAX Wireless Library speeds the development cycle by allowing system designers to analyze a system’s performance before all of its components are designed. It works within the ADS environment and with the Agilent Ptolemy simulator to streamline design and verification of Multi Access Orthogonal Frequency Division Multiplexing (OFDMA)-based, last-mile service designs. The Mobile WiMAX library also can be imported into Agilent’s RF Design Environment (RFDE), allowing RFIC designers to access Mobile WiMAX test benches within the Cadence Virtuo Custom IC platform through links developed as one result of the ongoing alliance between Agilent and Cadence. This mobile WiMAX design library enables you to easily create waveforms that comply with WirelessMAN-OFDMA PHY in the IEEE 802.16e-2005 standard. Moreover, this library provides transmitter measurements (such as EVM, CCDF and etc) and receiver measurements (such as receiver sensitivity, BER and etc). What is a Wireless Library? Wireless Connectivity technology is facing a number of evolving standards. Product development, however, cannot always wait for the standards to stabilize. An ADS Wireless Library is a way to meet time-to-market demands of evolving wireless standards by delivering an early representation of the current standard. As the standard stabilizes the library will evolve into a fully documented and formally supported Design Library product. Mobile WiMax Physical Layer WirelessMAN-OFDMA PHY has the following characteristics. Modulation Error correcting code Overall Coding rate Basic FFT Size Cyclic Prefix (G) QPSK OFDM, 16-QAM OFDM, and 64-QAM OFDM CC, BTC, and CTC 1/2, 3/4, 2/3 512, 1024, or 2048 1/32,1/16,1/8, and 1/4 Features • • • • • • • • • • • • Configure frames for downlink and uplink Flexible configuration of zones, bursts and MAC PDUs Choice of 512, 1024, or 2048 FFT sizes with variable bandwidths FCH , DL-MAP, and UL-MAP automatically generated Standards-based, raw, or fully coded data PUSC, FUSC and OFUSC Permutation Zone for downlink, PUSC and OPUSC Permutation Zone for uplink Channel coding: CC (Convolutional coding) and CTC (Convolutional turbo coding) STC with 2 antennas sources for both downlink and uplink SUI channel model, ITU channel model and 3GPP MIMO channel model CC decoding with soft decision (with channel state information - CSI) Flexible configuration of ranging, fast-feedback and HARQ-ACK Channels in uplink source Pre-configured downlink and uplink testbenches for WiBro standard -2- 802.16e OFDMA-contrasting OFDMs -3- Downlink Source 2 Antennas STC Downlink Source -4- Downlink Receiver 3GPP MIMO Channel Model -5- Test Benches Transmitter Measurements The following transmitter measurements are performed for both Uplink and Downlink subframes: – – EVM (or RCE) Constellation – CCDF,Spectrum Mask, Waveform EVM Test Bench -6- EVM Display -7- Receiver Measurements The following Receiver measurements are performed for both Uplink and Downlink subframes: –Receiver Sensitivity –BER and PER in AWGN –BER and PER on fading channel Mobile wireless access propagation Channel model is included in the WiMax Wireless Library. WMAN OFDMA - Downlink BER and PER on Fading Channel ITU Propagation channel model for Mobile WiMax applications -8- Downlink BER and PER Display Required ADS Modules Besides WiMax Wireless Library, required ADS modules are as follows: • • • Design Environment (E8900) Data Display (E8901) Agilent Ptolemy Simulator (E8823) © 2006 Agilent Technologies, Inc. Revised 22 August 2006