SBIR Phase I: Self and Alien Crosstalk Cancellation for Copper-Based Cellular and Access Backhaul

SBIR 第一阶段：铜基蜂窝和接入回程的自串扰和外来串扰消除

• 批准号: 1047336
• 负责人: Oren Eliezer
• 金额: $ 15万
• 依托单位: XW, LLC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-01-01 至 2011-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1047336&HistoricalAwards=false
• 关键词: SBIR; Phase; Self; Alien; Crosstalk

This Small Business Innovation Research (SBIR) Phase I project targets increased data throughputs in cellular and access backhaul networks that are based on copper twisted-pairs to address the ever-growing demand for capacity and the consequent bottlenecks that are experienced in them. The performance in the multi-twister-pair channels is limited by crosstalk and interference caused by various sources in their noisy environment. The technology to be developed in this Phase I project offers significant increases in throughput through cost-effective interference-mitigation mechanisms. The company?s key innovation is in low-latency dynamic interference cancellation algorithms, which greatly enhance system performance while maintaining acceptable implementation complexity. The project will involve both research and development at the algorithmic level, as well as system implementation challenges associated with the minimization of the system?s cost and power consumption. More specifically, the innovation includes novel approaches to training-sequence design and numerically-robust schemes for the mitigation of both self-induced crosstalk as well as unpredictable crosstalk originating from other systems sharing the cable of twisted pairs (alien interference). Based on preliminary results, it is anticipated that this technology will offer critically needed throughput enhancements ranging from a factor of 2 to a factor of 5, depending on the operating scenario.The broader impact/commercial potential of this project would be in enabling low-cost broadband services to a greater part of the population and thus also in fostering remote education, telecommuting and e-commerce. About 80% of the cell towers in the US utilize copper twisted-pairs for their backhaul, and the equipment market, valued at $5.6B in 2009, is expected to grow to $11.2B by 2013 due to deployment of bandwidth-intensive smart-phones and cellular Internet offerings. Hence, the relevant market sectors directly impacted are chip and communications equipment manufacturing. Many new micro-cells and femto-cells, offering wireless access in a coverage area smaller than that of a typical cell tower, are being deployed to offer wireless broadband coverage while relying on cooper-based backhaul. The copper infrastructure typically suffers capacity limitations and is interference-dominated while the higher-capacity alternatives, fiber and microwave, are costly and slow to deploy. The interference-mitigation technology enabling this breakthrough, developed in collaboration with the University of Texas at Dallas, may be applicable in other multi-channel communication systems, and can serve, for example, to better utilize scarce wireless spectrum.

这项小型企业创新研究（SBIR）I阶段项目的目标是增加基于铜扭曲对基的细胞和访问回程网络中的数据吞吐量，以解决对容量不断增长的需求以及在其中经历的随之而来的瓶颈。多扭曲者对渠道的性能受到串扰和嘈杂环境中各种来源的干扰的限制。在此阶段I项目中要开发的技术通过具有成本效益的干扰机制可显着增加吞吐量。该公司的关键创新是在低延迟动态干扰取消算法中，它极大地增强了系统性能，同时保持可接受的实现复杂性。该项目将涉及算法层面的研究和开发，以及与系统成本和功耗最小化相关的系统实施挑战。更具体地说，这项创新包括训练序列设计和数值稳定方案的新方法，以减轻自我诱导的串扰以及不可预测的串扰，这些串扰源自其他系统，这些系统源自其他系统共享扭曲对的电缆（外星人干扰）。基于初步结果，可以预计该技术将提供急需的吞吐量增强，范围从2倍到5倍，具体取决于操作方案。该项目的更广泛的影响/商业潜力将在于启用低 - 为大部分人口提供宽带服务，从而为促进远程教育，远程办公和电子商务提供了费用。在美国，约80％的蜂窝塔利用铜扭转对进行回程，而设备市场在2009年的价值为5.6B美元，由于部署带宽密集型智能手机的部署，预计到2013年将增长到2013年$ 11.2B和蜂窝互联网产品。因此，相关市场部门直接影响的是芯片和通信设备制造。许多新的微型细胞和FEMTO细胞，在覆盖区域中提供的无线访问小于典型的单元塔，以提供无线宽带覆盖范围，同时依靠基于Cooper的Backhaul。铜基础架构通常会遭受容量限制，并且是干扰主导的，而较高容量的替代品（Fiber和Microwave）的部署成本高昂且缓慢。与得克萨斯大学达拉斯分校合作开发的这一突破的干预缓解技术可能适用于其他多渠道通信系统，并可以为例如更好地利用稀缺的无线频谱提供服务。