User's Manual
Table Of Contents
- GigAccess™ OFDM 5.8
- Installation and Operation Instructions
- TABLE OF CONTENTS
- TABLE OF TABLES
- TABLE OF FIGURES
- Introduction
- Installation
- GigAccess™ OFDM 5.8 Technical Specifications
- Appendix A – WaveIP Approved Antennas
- Appendix B – RF Link Budget Calculation
- Appendix C – RF Power and Distance versus Antenna Gain
- Appendix D – RF Hazard Distance Calculation
- Appendix E – RF Channel List
- Appendix F – Outdoor Cables Scheme
- Appendix G - Using the Unit Manager Tool
WaveIP Ltd. GigAccess™ OFDM 5.8
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The following figure depicts a general description of a typical sector in the GigAccess™
OFDM system.
AU
AU
Switch/Router
SU
SU
SU
SU
Base Controller
(Option)
WAN
Figure 1-2: Typical sector in GigAccess™ OFDM System
The sector uses a single radio channel frequency with a 20 MHz bandwidth, which
carries up to 36 Mbps data throughput. The system is a frame-based system,
meaning the time dimension is divided into small periods called frames. Each frame is
divided into two parts: downstream part (traffic passing from the AU to the SUs) and
upstream part (traffic passing from the SUs to the AU). The Time Domain Duplex
(TDD) technique is utilized to divide the bandwidth periodically based on the frame
size. The portion of the frame, which is allocated to the upstream traffic, is divided
between the SUs in the time domain using TDMA (Time Division Multiplex Access)
technique.
All the divisions are done dynamically thus allowing the SUs to share the channel
capacity in a very efficient way.
Figure 1-3: GigAccess™ OFDM 5.8 Outdoor Unit