Byline: datta03 ViaSat (Nasdaq:VSAT) is offering a new Ethernet Service Expansion Module (ESEM) baseband interface for the MD-1366 Enhanced Bandwidth Efficient Modem (EBEM) that promotes Frequency Division Multiple Access (FDMA) modem interoperability across Department of Defense (DoD) satellite networks and adds new feature updates as well.
The three technologies commonly used by 2G cell phone networks for transmitting information: frequency division multiple access (FDMA); time division multiple access (TDMA); code division multiple access (CDMA).
Half of the papers tackle protocol issues, exploring the medium access control layer, radio resource management, network selection strategies, link layer adaptation mechanisms, and the orthogonal frequency division multiple access (OFDMA) modulation scheme.
Besides all the features required for Worldwide Interoperability for Microwave Access (WiMAX) Forum Wave 2 mobile device certification, the new MB86K23 provides wireless access using 512/1024/2048 Fast Fourier Transform (FFT) Orthogonal Frequency Division Multiple Access (OFDMA) with integrated MAC processors.
00 Hardcover Artech House mobile communications series TK5103 Orthogonal frequency division multiple access (OFDMA) is, according to Pietrzyk (founder, Innovative Solutions, "a consulting and development company specializing in the design and implementation of wireless access systems"), one of the most promising multiple access technologies that meet future broadband wireless access systems demands for support of high data rates, operation in a hostile multipath radio environment, provision of various QoS profiles, and minimal consumption of RF bandwidth and transmit power.
It works with 700/800 MHz and VHF bands, communicates with Frequency Division Multiple Access (FDMA) and Time Division Multiple Access (TDMA) networks and has integrated Global Positioning System capability.
Topics included: * Optical/Wireless Integration for Enhanced Broadband Access and Transmission * Core Network Design and Planning: Challenges and Technology Trend * Wireless Intermediate Frequency Signal over Passive Optical Networks: Architecture and Experimental Performance Evaluation * 40-Gb/s Wavelength-Division-Multiplexing Passive Optical Network with Centralized Lightwave Source * Pseudowire Packet Loss Control in Optical Access * Optical Orthogonal Frequency Division Multiple Access (OFDMA)-Based Optical Access/Metro Ring Networks * 10-Gb/s OFDMA-PON for Delivery of Heterogeneous Services For more information regarding NEC's optical networking technologies please visit http://www.
