Active Antenna System Development Platform
20131010 - 20150409
Dr Justin Che-i Chuang
Active Antenna System (AAS) Hardware Platform: An integrated unit with Digital module, RF Transceiver, Antenna, and Power Amplifier with the following specifications including CPE as data tester: 1. EIRP = 1.5~6.0 Watts 2. RF Transceiver: 2570~2620 MHz (hardware configurable), Signal Bandwidth = 20 MHz 3. Power Amplifier: 0.5~2.0 Watts, >20% power efficiency 4. Digital module: One 2.5Gbps optical interface 5. Antenna Gain: 6~8 dBi Firmware Development: 1. For FPGA (consisted in digital module) to perform signal processing, CFR/DPD, buffering, synchronization, and CPRI (fiber-optic backhaul) with option for customers to load their own proprietary code into the system. 2. For NPU (consisted in CPE) to perform 4G data processing and to provide QoS and network security. Algorithm Development: 1. Diversity and MIMO algorithms design for 2 units AAS array. 2. MRC algorithm design to improve uplink SNR of AAS unit Reports: The design documents of AAS covering hardware, firmware and algorithm development. Note: EIPR: Effective Isotropic Radiated Power CPE: Customer Premises Equipment MIMO: Multiple-Input Multiple-Output NPU: Network Processor Unit CPRI: Common Public Radio Interface MRC: Maximum Ratio Combining SNR: Signal-to-Noise Ratio CFR: Crest Factor Reduction DPD: Digital Pre-Distortion
Dr Che-I, Justin CHUANG Mr Ray HO Dr Angus MAK Dr Irene CHEUNG Mr Wilfredo DALUZ Mr Jianbiao LONG Mr Yuliang CHAI Mr Xu GAO Dr Yun HOU Mr Lejin XIONG Ms Jia JIANG Ms Dongmei ZHANG Dr Wen QIN Ms Rebecca CHOI Mr Calvin LEE Ms Angel CHEUNG Dr Xin yi LIU Mr Angus SAM Miss Du Yuanyuan, Yvonne Dr Man Wai Kwan Mr Xuefeng Guo Mr Ching Hong Leung Dr Honglei Zhang Dr Feng Liu
Agilent Technologies (China) Co Ltd. [Sponsor] Altera International Limited [Sponsor] Chang Chun Great Dragon Telecommunication Equipment Company Limited [Sponsor] China Mobile Research Institute Fujian Sunnada Communication Co. Ltd. [Sponsor]
This project focuses on developing a new technology platform taking the advantages of advanced RF and antenna technologies to address the mobile operators’ demands in delivering broadband wireless communications services. The project will focus on two areas: 1) Active Antenna System (AAS); and 2) Advanced Algorithms for Cloud Radio Access Network (C-RAN) to create a low-cost and compact antenna system for 3G, and 4G networks. The AAS is a system of individual antenna elements integrated together with active components, including FPGA, RF Transceiver, etc., to enable the antenna system with capability of reconfiguration for MIMO, beamforming, and diversity. The AAS units will be deployed as part of the Cloud-Radio platform promoted by China Mobile that can result in a savings of 70% in power consumption (Green RF). By utilizing advanced digital RF and antenna designs, the power amplifier and heat-sink size can be reduced such that a low-profile system can be manufactured. The platform project builds on prior experience, IPs and know-how in active antennas technology for mobile handsets, beam-forming, and isolation developed from previous ITF projects to create the advanced AAS platform by combining the digital and RF designs into a single integrated unit. The platform technologies of this project will find immediate applications in the infrastructure market of communication industries of many companies such as Centron Communications, Sunnda Communication, Altai Technologies, Altera, Agilent, Magnolia already expressing strong interest to support this project. China Mobile also signed a letter of support to demonstrate its interest in collaborating with this project. The new platform technology will also enable collaborations or joint R&D with both the industry and other domains within ASTRI to upgrade the technical capability and competiveness of the communications industry in Hong Kong and the region.