Adaptive Channel Coding Scheme for Next Generation HF-IP Wide Area Network (WAN)

目前，对高频通信技术提供数字服务的需求不断增长，特别是在国防通信领域，未来的核心网络将包括各种传输技术，包括高频，以确保可靠的广域网。新技术和智能频率管理的可用性正在导致重新评估和利用这部分频谱的独特优势。未来HF系统的成功依赖于在多个IP内集成的能力（互联网协议）为基础的网络，即卫星通信，局域网（局域网），WAN HFIP网络可以很容易地沿着与其他网络（如SATCOM、V/UHF、陆线等）集成，通过使用现成的商用现成（COTS）HF系统，组成一个WAN，以支持延迟和更高速率不重要的IP流量。这些类型的HFIP-WAN网络还将提供宝贵的，在人道主义行动和救灾行动中提供具有成本效益的支持，使现场用户能够与主要网络连接。电波信道对发展高数据率可靠通信提出了重大挑战，但由于使用电离层作为免费中继器而不是使用昂贵的卫星服务。人们对开发HFIP无线WAN网络（HFIP-WAN）也有相当大的兴趣，这为开发用于HFIP-WAN架构的改进的差错控制编码和调制支持开辟了新的潜力。这里提出的研究将通过改进HF系统使用的现有差错控制编码和调制方案来保持HF频带的竞争力，以适应新的HFIP-WAN网络。这项研究还提出了调查一个自我形成，自我修复的概念，支持编码内的HFIP广域网。

Currently there is a growing demand for HF communication technology to provide digital services, especially in the area of defence communications where the future core networks will comprise a variety of delivery techniques, including HF, to ensure a reliable WAN. The availability of new technologies and intelligent frequency management is now leading to a re-evaluation and exploitation of the unique advantages in this part of the spectrum. The success of future HF systems rely on the ability to integrate within a multiple IP (Internet Protocol) based networks i.e. SATCOM, LAN (Local Area Network), WAN (Wide Area Network) bearers and also able to support IP network diversity.An HFIP network can easily be integrated along with other networks such as SATCOM, V/UHF, land lines ,etc, to comprise a single WAN to support IP traffic where the latency and higher rates are not paramount, through using readily available commercial off the shelf (COTS) HF systems. These types of HFIP-WAN networks will also provide invaluable, cost effective support in humanitarian operations and disaster relief operations allowing field users to link with major networks.The nature of the HF sky-wave channel imposes a major challenge in developing high data rate reliable communicationsbut there is a greater economic demand for pursing HF communications due to usage of the ionosphere as a free repeater rather than the use of expensive satellite services.There is also a considerable interest in developing HFIP wireless WAN networks (HFIP-WAN)) and this opens up new potential in developing improved error control coding and modulation support for the HFIP-WAN architecture.The research proposed here will maintain the competitiveness of the HF band by improving the existing error control coding and modulation schemes used by HF systems to suite the new HFIP-WAN networks. This research also proposes investigating a self-forming, self-healing concept supported by coding within an HFIP WAN.