High Efficiency RF System
20150331 - 20160929
Dr Justin Che-i Chuang
1. Algorithm with simulation: (1) High efficiency power amplifier algorithm (2) Active Beam-forming algorithm up to 8-element antenna array (3) Transceiver path measurement and compensation algorithms to provide uniform gain and phase while reducing I/Q imbalance and DC offset (4) Maximum Ratio Combining algorithm to improve uplink Signal-to-Noise Ratio (SNR) 2. Firmware: (1) For Hardware platform, consisted of DSP and Control Unit (DCU), to perform signal processing, buffering, synchronization, measurement and compensation, Analog-to-Digital Interface (ADI) and CPRI. 3. High Efficiency RF System (HiERFS) Hardware Platform: (1) DSP and Control Unit (DCU): support up to 2 small cells or 2 C-RAN connection. (2) RF Unit: LTE TDD bands, 20MHz, 3GPP compliance for high power large coverage usages (3) Panel Antenna Array: up to 8 elements array demonstrating beam-forming (compliance to 3GPP)
Mr Ray Ho Dr Kong Chau, Eric TSANG Dr Xin yi LIU Mr Angus SAM Mr Calvin LEE Ms Rebecca CHOI Ms Amy YEUNG Dr Man Wai KWAN Dr Eddy CHIU Dr Jihui, Elaine ZHANG Dr Wang Kit, Wilson THONG Dr Huayu ZHOU Ms Jia JIANG Ms Irene CHEUNG Dr Yun HOU Mrs Dongmei ZHANG Mr Jianbiao LONG Mr Yuliang CHAI Mr Wilfredo DALUZ Ms YuanYuan DU Ms Angel CHEUNG
Fujian Sunnada Communication Co. Ltd. (in-kind) Fujian Sunnada Communication Co. Ltd. (Licensing) [Sponsor] Fujian Sunnada Communication Co. Ltd. (sponsorship) [Sponsor] Rohde & Schwarz Hong Kong Ltd.(in-kind)
This project focuses on developing a high efficiency RF system and aims at the existing system (4G) as well as the future network (Beyond 4G). This project will focus on four major areas to increase the spectral and power efficiency of RF systems. The four major areas include (1) high efficiency power amplifier, (2) closed loop RF system, (3) panel antenna array and (4) maximum ratio combining (MRC). These technologies can provide higher spectral efficiency and reduce the power consumption of the wireless system. The project will utilize some technological achievements from the prior projects: “5G RF Front-end Systems” and “Active Antenna System Development Platform”. The technologies of this project will provide immediate applications in the infrastructure market of the communications industry. Many companies such as Sunnada, Rohde & Schwarz and TCL already expressed strong interest to support this project. The new 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.