All Analogue Full-duplex Dual-receiver Radio for Wideband Mm-wave Communications

用于宽带毫米波通信的全模拟全双工双接收器无线电

• 批准号: EP/X041395/1
• 负责人: Dariush Mirshekar
• 金额: $ 72.36万
• 依托单位: University of Essex
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX041395%2F1
• 关键词: Analogue; Full; duplex; Dual; receiver

Smartphones, tablets and laptops are widely used for multi-user video conferencing, watching video and TV, playing video game, downloading/uploading large files and applications. Data exchanged over wireless networks is significantly increasing annually, and hence the data speed needs to be increased with the demand to keep users happy. Radio network designers and spectrum regulators are facing the daunting task of efficient resource planning to meet the growing demand. Considering spectrum limitation, providing ultra-speed wireless systems can only come through some breakthrough technologies. The full-duplex (FD) radio is one technology with the potential to double the speed and if planned at mm-wave bands, it can offer a huge bandwidth.The massive benefits of broadband mm-wave FD in HetNets are well-known including very fast Gbit inter-operation between small cells in wireless networks. The availability of low-cost mm-wave MMIC-based subsystems together with the simple infrastructure setups for FD radios would place broadband mm-wave FD radios ahead of its rival, namely, the complicated low frequency broadband massive multi-input multi-output (MIMO) systems operating in multiple channels. Indeed, the low-cost broadband infra-structure networks based on FD would be very attractive to mobile operators continuously looking for cheap solutions to provide very high-speed communication coverage in complex environments like underground tunnels, large/high-story buildings, and busy densely populated city areas. Indeed, millions of femtocells of wideband mm-wave FD radios can be envisaged to operate worldwide on the mature of the broadband mm-wave FD technology, ensuring substantial revenue (of the order of billions of pounds) for contributors to the technology.A FD radio uses one channel to transceive and hence self-interference (SI) is its major problem. In FD radios, the required SI cancellation (SIC) depends on transmitter power and signal bandwidth. Typically, a SIC of 60 dB to 110 dB is necessary for a reliable FD system. In low frequency FD radios, this large suppression is normally achieved in multiple stages; ie: in antenna system, in receiver front-end, and in baseband with digital signal processing (DSP).Assuming 10% fractional bandwidth, mm-wave carrier frequencies have the potential to modulate fast signals of a few GHz bandwidth; eg: 3 GHz bandwidth becomes available at 30 GHz carrier. For such a wide baseband, the DSP-based SIC cannot be an option, since no miniaturised power conscious DSP unit for implementation in small mobile/fixed devices is available presently to deal with fast signals of a few GHz bandwidth. To remove the DSP constraint, several promising techniques have been proposed to mitigate the SI in mm-wave FD radios, but they are still under research with limited practical results presented so far in the literature.Recently under an EPSRC grant we have developed a new SIC technique free from DSP. Based on this, we demonstrated a narrow band (60 MHz) FD radio at 3.2 GHz microwave carrier. Our demonstrator achieved a total of 81.5 dB SIC at -5.6 dBm transmit power. Our new system owes its digital-free performance to a two-receiver architecture purging the need for the DSP stage. This property is anticipated to be extremely suitable/important for realising all analogue broadband mm-wave FD systems.The novelty of this proposal, distinguishing it from and indeed levitating well above the work in the literature, is unlocking the potential of our new narrow band FD radio architecture to exploit its several advantages including an analogue baseband SIC solution (i.e., free from DSP) and a self-mutipath reflection interference cancellation via a three-port dual antenna system with a high isolation between transmitter and the dual-receiver. In this work we are to put to test our experiences in developing our new dual-receiver microwave FD radio to realise a unique DSP-free broadband mm-wave FD radio.

智能手机，平板电脑和笔记本电脑被广泛用于多用户视频会议，观看视频和电视，玩视频游戏，下载/上传大型文件和应用程序。通过无线网络交换的数据每年都在显着增加，因此，随着需求，数据速度需要提高以保持用户满意。无线电网络设计师和频谱监管机构正面临着有效资源计划的艰巨任务，以满足不断增长的需求。考虑到频谱限制，提供超速无线系统只能通过一些突破性技术。全双工（FD）无线电是一项有可能使速度加倍的技术，如果计划在MM-Wave频段，它可以提供巨大的带宽。宽带MM-WAVE FD在HETNETS中的巨大好处是众所周知的，包括非常快速的GBIT在无线网络中小单元之间非常快的GBIT互操作。低成本MM-WAVE基于MMIC的子系统的可用性以及简单的FD收音机基础架构设置将在其竞争对手之前放置宽带MM-WAVE FD无线电，即复杂的低频宽带大型多输入多输入（MIMO）系统在多个通道中运行。确实，基于FD的低成本宽带基础结构网络对于移动运营商不断寻找便宜的解决方案，以在复杂的地下隧道，大型/高层建筑物以及繁忙的人口稠密的城市地区提供非常高速的通信范围。的确，可以设想数以百万计的宽带MM-wave FD收音机在全球范围内运营，以宽带MM-Wave FD技术成熟，可确保（数十亿英镑的订单）为该技术的贡献者提供大量收入。在FD收音机中，所需的SI取消（SIC）取决于发射器功率和信号带宽。通常，对于可靠的FD系统，需要60 dB至110 dB的SIC。在低频FD收音机中，通常在多个阶段实现这种大型抑制作用。 IE：在天线系统中，在接收器前端和具有数字信号处理（DSP）的基带中。缩放10％分数带宽，MM波载波频率有可能调节几个GHz带宽的快速信号；例如：3 GHz带宽在30 GHz载体上可用。对于如此宽的基带，基于DSP的SIC不能是一种选择，因为目前可以在小型移动/固定设备中实现微型电源DSP单元来处理几个GHz带宽的快速信号。为了删除DSP约束，已经提出了几种有希望的技术来减轻MM-WAVE FD无线电的SI，但是它们仍在研究中，迄今为止在文献中提出的实际结果有限。根据EPSRC赠款，我们开发了一种新的SIC技术。基于此，我们在3.2 GHz微波载体上展示了一个狭窄的频带（60 MHz）FD无线电。我们的示威者在-5.6 dBM发射功率下，总共达到了81.5 dB SIC。我们的新系统将其数字性能归功于两者的架构，从而清除了DSP阶段的需求。预计该属性非常适合实现所有模拟宽带MM波FD系统。该提案的新颖性，将其与文献中的工作区分开并确实远远超出了文献的悬浮，这取消了我们新的狭窄Band FD无线电架构的潜力，以利用其几个优势，包括通过Aneruge Base Base Base Base Base Base Base Base Base sic Ater（I.Efferentiation）（I.Efferention）（I.Efferention）。三端口双天线系统在发射器和双接收器之间具有高分子。在这项工作中，我们将在开发新的双接收器Microwave FD广播中测试我们的经验，以实现独特的无DSP宽带MM-WAVE FD广播。