Implementation of high-order modulation schemes for spectrally efficient mobile network wireless backhaul at extremely high frequencies

对无线移动的高速互联网接入的需求不断增长。这种需求主要是由媒体丰富的消费者应用程序（例如音乐和视频流）驱动的。4G无线网络的发展将有能力提供这些服务。然而，支持指数数据业务增长（每年超过两倍）的总聚合数据速率将瓶颈从终端转移到移动回程（即，点对点无线链路）。这种链路的容量要求需要向更高的工作频率转变。e带E波段微波链路被认为是未来无线通信系统的重要组成部分之一，目前和不久的将来（2012年）可获得的E波段产品预计只能达到高达1Gbps的数据速率，频谱带宽使用超过2GHz的宝贵带宽，500 MHz是最具频谱效率的系统。市场正在寻找能够在此频谱内承载更多数据并更有效地工作的产品，以最大限度地提高网络的总承载能力。目前还没有商业上可用的技术可以同时满足这些要求。本项目将进行概念验证工作，以确定专门为E波段开发的高级算法如何能够在这些频率上实现更高阶的调制方案，如QAM 64，这将大大提高下一代E-这些新产品将是使用无线通信的消费者应用持续扩张的关键推动力，在竞争中获胜的公司将为电信行业提供这些产品，并将实现强劲增长。Filtronic很早就发现了E-Band所代表的机会，并率先开发了无线模块，现在已开始部署到市场中。Filtronic设计了一款1Gbit/sec、16 QAM调制产品，将于2012年第一季度部署（见附录B.4）然而，来自EBandCommunications和BridgeWave等竞争对手的竞争非常激烈，至关重要的是，Filtronic继续通过开发更高，这一项目为Filtronic提供了一个机会，可以加速其在全球范围内的业务增长，采用64 QAM等调制方案的更高速度和频谱效率产品的进入，可以保持其竞争优势。

There is an ever increasing demand for wireless mobile high-speed internet access. Thisdemand is mostly driven by media rich consumer applications (e.g. streaming of music andvideo). The development of 4G wireless networks will have the capacity to provide theseservices. However, the total aggregate data rates supporting exponential data traffic growth(more than doubling per year) will shift the bottleneck from the terminals to the mobilebackhaul (i.e. point-to-point wireless links). The capacity requirements for such links require ashift towards higher frequency of operation. The E-band (71-76GHz and 81-86 GHz) has beenallocated for this purpose and E-band microwave links are viewed as one of the importantcomponents of the wireless communication system of the future.E-band products available today and in the near future (2012) are only expected to achieve upto 1Gbps data rates with spectrum bandwidth using more than 2GHz of precious bandwidth &500MHz for the most spectral efficient systems.The market is looking for products that will both carry more data and work more efficientlywithin this spectrum, to maximize the total carrying capacity of the networks. Today there areno commercially available technologies that can simultaneously fulfill these requirements.This project will do proof-of-concept work to determine how advanced algorithms specificallydeveloped for E-Band can enable higher-order modulation schemes such as QAM64 to beimplemented at these frequencies, which will dramatically increase spectral efficiency andthroughput of the next generation of E-Band products.These new products will be key enablers of the continuing expansion of consumerapplications that use wireless communications, and the companies that win out in thecompetition to supply these products to the telecommunications industry will be positionedfor strong growth. Filtronic spotted the opportunity represented by E-Band very early on, andtook an early lead in developing wireless modules which are now starting to deploy into themarket. Filtronic have designed a 1Gbit/sec, 16QAM modulation product which will deployin Q1 2012 (see Appendix B.4) However, the competition from rivals such as EBandCommunications and BridgeWave is intense, and it is vital that Filtronic continue todifferentiate by developing higher-performance solutions that will maintain a lead over itsrivals and allow it to build market share.This project gives Filtronic an opportunity to accelerate the entry of higher speed & spectrumefficient products using modulation schemes such as 64QAM that can maintain itscompetitive edge.