In general, performance improvements over the existing radio systems are basically obtained through proper deployment of fast link adaptation and new packet scheduling algorithms, exploiting the available multi-user diversity in both time and frequency domains [4-6].
The VMM 4300 solution leverages Motorola's field-proven MeshConnex(TM) routing technology and Opportunistic Radio Link Adaptation (ORLA) to enable reliable and secure mobile access to multiple voice, video and data applications, including advanced passenger information services.
Among the topics addressed are link adaptation techniques for carrier sensed multiple access based wireless local area networks, adaptation in the physical layer using heterogeneous reconfigurable hardware, adaptive video multicast over wireless internet, adaptive techniques for robust real-time video communications, modeling adaptive self-organizing wireless networks, online stochastic optimization of wireless multimedia networks, economic and adaptive admission control of non-stationary traffic in wireless multimedia networks, and multimedia delivery over wireless multi-hop networks.
Began shipments of LinkStar[R] VSAT system with Adaptive Coding and Modulation (ACM), plus exclusive ViaSat Dynamic Link Adaptation (DLA) and AcceleNet software.
11n feature set also includes Advanced Aggregation, which enhances MAC efficiency; Fast Link Adaptation (FLA), which optimizes real home performance; and, the embedded Quality of Service (QoS) provided through EDCA plus admission control ensures that users can enjoy hours of picture perfect video without interruption.
Key features: - Detailed description of how Multimedia Telephony sessions are set-up and controlled - Analysis showing the capacity and quality of VoIP and Multimedia Telephony in cellular networks - Coverage of other IMS services such as PoC specified by 3GPP and OMA - Description of suitable QoS and radio bearers for Multimedia Telephony - Explanation of the modern radio interface, especially High Speed Packet Access, which is based on concepts such as link adaptation and fast hybrid ARQ The possibilities for the current and future standards covered in this book make it an indispensable resource for engineers, designers and researchers in VoIP, telecommunication companies and universities teaching and conducting research in telecommunications.
It integrates in a 3-FPGA chipset all MAC and PHY features required for WiMAX Forum certification and enables WIMAX system manufacturers to develop powerful, feature-rich base stations with advanced functionality for managing quality of service, link adaptation, and handover management.
It contains a fully i-BURST-compliant transmitter and receiver with traffic-, broadcast-, and paging-channel support; radio control functions; variable order modulation; forward error correction; constellation shaping; and burst-by-burst link adaptation, among other features.
