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— A scalable system architecture is proposed and demonstrated for spatial multiplexing over millimeter-wave line-of-sight communication links. This architecture provides increased data capacity without increasing the channel bandwidth. The modulation format is simple (BPSK or QPSK); this facilitates high-rate operation. The spatially multiplexed channels(More)
—This paper presents recent experimental results from a novel hardware prototype of an outdoor millimeter-wave line-of-sight (LOS) MIMO link. The system architecture establishes multiple parallel data channels using antenna element spacing derived from the principles of diffraction-limited optics. A millimeter-wave carrier frequency reduces the antenna(More)
—A unique feature of communication at millimeter (mm) wave carrier frequencies is that spatial multiplexing is available for multiple-input multiple-output (MIMO) links with moderate antenna spacing even without a rich scattering environment. In this paper, we investigate the potential for exploiting this observation for increasing the spectral efficiency(More)
—In this paper, we present a coherent receiver based on an optical phase-locked loop (PLL) for linear phase demodu-lation. The receiver concept is demonstrated at low frequency. For high-frequency operation, monolithic and hybrid integrated versions of the receiver have been developed and experimentally verified in an analog link. The receiver has a(More)
We report first experimental results from a hardware prototype of a millimeter wave line-of-sight (LOS) 2x2 MIMO link. The proposed architecture uses antenna element spacing derived from the principles of diffraction limited optics to establish multiple parallel data channels. Operation at millimeter wave carrier frequencies reduces the antenna array size(More)
—Spatial multiplexing for millimeter (mm) wave line of sight (LOS) links potentially enables data rates of the order of 10-100 Gbps. Most prior work in this area has focused on uniform transmit and receive arrays, for which it is known that the spatial responses seen by different transmitters can be made orthogonal by choosing the antenna spacing(More)
iii Acknowledgements I would like to thank my advisor, Professor Mark Rodwell. His guidance and expertise in circuit and system design have made this dissertation possible. His passion and professionalism in academic research set an example I aspire to match as I embark on my professional career. I would like to thank the members of Professor Rodwell's and(More)
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