Dispersion code multiple access (DCMA) for 5G communications

该项目将开发60 GHz的分散编码多址（DCMA）系统，这是一种潜在的颠覆性技术，可满足下一代5G网络的挑战性需求。目前的4G技术将在很大程度上不足以满足预期的1,000倍数据容量增长，以处理快速发展的IEEE 802.11和5G无线市场的1,000多亿台峰值速率为10 Gb/s的设备。目前的4G系统严重依赖于数字技术，其高功耗混合信号子系统需要超快模数（ADC）和数模转换器（DAC），这在这种高频和大带宽机制中变得令人望而却步。因此，考虑到无线千兆（WiGig/11 ad）市场的大规模扩张趋势将从2014年的2.699亿美元增长到2019年的1053亿美元，对颠覆性技术解决方案的需求最为迫切。DCMA是一种全新的基于模拟和实时处理的多址接入技术，因此具有非常低的功耗沿着的超高数据吞吐量。在所提出的DCMA系统中，每个无线信道在整个可用信号带宽内操作，并且使用使用称为相位器的电磁结构生成的唯一色散码进行硬件编码和解码。该项目将为2x2 DCMA系统和4x 4 DCMA系统开发概念验证原型，这些系统在实际无线环境条件下工作在60 GHz左右。它将涉及以下活动：1）60 GHz相位器的开发，制造和表征，2）将这些相位器集成到完整的Tx-Rx架构中，3）DCMA系统实现和功耗，数据吞吐量，通信范围和频谱效率方面的表征，以及4）将系统与最先进的多址技术进行比较。初步的模拟和实验表明，所提出的系统将提供特殊的好处，在成本，数据容量和功耗。

This project will develop Dispersion Coded Multiple Access (DCMA) system at 60 GHz, a potentially disruptive technology for meeting the challenging demands of next-generation 5G networks. The current 4G technology will be largely insufficient to meet the expected 1,000-fold increase in data capacity to handle over 100 billion devices featuring peak rates of 10 Gb/s of the fast evolving IEEE 802.11 and 5G wireless markets. The present 4G systems heavily rely on digital techniques, whose high-power consuming mixed signal subsystems, require ultrafast analog-to-digital (ADC) and digital-to-analog converters (DAC), that become prohibitive in such high-frequency and large-bandwidth regimes. Therefore, considering the projected trends for vast expansion of the Wireless Gigabit (WiGig/11ad) market to grow from $269.9M in 2014 to $10.53B in 2019, there is a most pressing need for disruptive technological solutions. DCMA is a radically new approach of multiple-access technique based on analog and real-time processing, thereby featuring very low power consumption along with ultra-high data throughput. In the proposed DCMA system, each wireless channel operates within the entire available signal bandwidth, and is hardware encoded and decoded using unique dispersive codes generated using electromagnetic structures called phasers. The project will develop proof-of-concept prototypes for a 2x2 DCMA system and a 4x4 DCMA system operating around 60 GHz in realistic wireless environment conditions. It will involve the following activities: 1) development, fabrication and characterization of phasers at 60 GHz, 2) integration of these phasers into complete Tx-Rx architectures, 3) DCMA system realization and characterization in terms of power consumption, data throughput, communication range, and spectral efficiency, and 4) comparison of the system with state-of-the-art multiple access techniques. Preliminary simulations and experiments suggest that the proposed system will provide exceptional benefits in terms of cost, data capacity and power consumption.