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.

该小型企业创新研究 (SBIR) 第一阶段项目的目标是提高基于铜质双绞线的蜂窝和接入回程网络的数据吞吐量，以满足不断增长的容量需求以及随之而来的瓶颈。多绞线通道的性能受到噪声环境中各种源引起的串扰和干扰的限制。第一阶段项目将开发的技术通过具有成本效益的干扰缓解机制显着提高了吞吐量。该公司的关键创新在于低延迟动态干扰消除算法，该算法极大地提高了系统性能，同时保持了可接受的实施复杂性。该项目将涉及算法层面的研究和开发，以及与最小化系统成本和功耗相关的系统实施挑战。更具体地说，该创新包括训练序列设计的新颖方法和数值鲁棒性方案，用于减轻自感串扰以及源自共享双绞线电缆的其他系统的不可预测的串扰（外部干扰）。根据初步结果，预计该技术将提供急需的吞吐量增强，范围从 2 倍到 5 倍，具体取决于操作场景。该项目更广泛的影响/商业潜力将在于实现低大部分人口的宽带服务成本增加，因此也影响了远程教育、远程办公和电子商务的发展。美国大约 80% 的蜂窝塔使用铜质双绞线进行回程，由于带宽密集型智能手机的部署，2009 年设备市场价值为 $5.6B，预计到 2013 年将增长到 $11.2B和蜂窝互联网产品。因此，直接受影响的相关市场领域是芯片和通信设备制造。许多新的微蜂窝和毫微微蜂窝在比典型蜂窝塔覆盖范围更小的覆盖范围内提供无线接入，正在部署以提供无线宽带覆盖，同时依赖基于铜缆的回程。铜缆基础设施通常受到容量限制并且以干扰为主，而更高容量的替代方案（光纤和微波）成本高昂且部署缓慢。与德克萨斯大学达拉斯分校合作开发的干扰缓解技术实现了这一突破，可能适用于其他多通道通信系统，例如可以更好地利用稀缺的无线频谱。