Millimeter-wave (mmW) wireless is as a promising technology for meeting the Gigabit rate and low latency requirements of emerging fixed and mobile 5G applications. This is enabled by the large (GHz) bandwidths and high-gain beamforming due to high-dimensional antenna arrays possible at mmW frequencies. Initial propagation measurements underscore the highly directional nature of mmW communication, dominated by line-of-sight and single-bounce multipath, making beamforming a critical operational functionality. However, existing channel measurements are limited to mechanically pointed horn antennas and single-beam phased arrays of moderate sizes. On the other hand, multi-beam operation is necessary for spatial multiplexing. In this paper, we introduce a new measurement methodology and initial results based on beamspace MIMO channel modeling and communication. The measurement results are based on a novel beamspace MIMO prototype system that uses a lens array for analog beamforming and enables, for the first time, simultaneous multi- beam channel measurements with a beamwidth of about 4 degrees equivalent to that of a two- dimensional array with 636 critically spaced elements. Initial indoor channel measurements follow Friis formula for pathloss, and illustrate the new beamspace channel measurement and modeling methodology.
Indoor Channel Measurements Using a 28GHz multi-Beam MIMO Prototype
2016-09-01
2955098 byte
Conference paper
Electronic Resource
English
A 28GHz CMOS FREQUENCY DOUBLER WITH TFMS
British Library Online Contents | 2006
|A High-Gain, 28GHz, 200kW Gyroklystron Amplifier
British Library Online Contents | 1998
|Frequency Correlation of an Indoor MIMO Channel
British Library Conference Proceedings | 2006
|An Iron-Free Magnetron-Injection-Gun for a 28GHz, 200kW Gyroklystron Amplifier
British Library Online Contents | 1999
|