Mimo for millimeter-wave wireless communications: beamforming, spatial multiplexing, or both?

Sun, Shu; Rappaport, Theodore S.; Heath, Robert W.; Nix, Andrew R; Rangan, Sundeep

doi:10.1109/mcom.2014.6979962

Cited by 603 publications

(420 citation statements)

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“…Hybrid analog-digital beamforming is considered as an attractive solution when it comes to tradeoff between hardware complexity and channel capacity [16], [171]- [174], for which the interplay gives a number of design criteria of the beamforming. This section addresses these design and performance evaluation aspects of mm-wave beamforming in the context of spatial propagation channels at the mm-wave band, which are often reported to be more directionally selective than at the microwave band e.g., [24], [43], [68], [175]. For this purpose, we first elaborate the expression of a propagation channel defined in Sect.…”

Section: Mm-wave Beamformingmentioning

confidence: 99%

Channel Models and Beamforming at Millimeter-Wave Frequency Bands

Haneda

2015

IEICE Trans. Commun.

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SUMMARYMillimeter-wave (mm-wave) radio is attracting attention as one of the key enabling physical layer technologies for the fifthgeneration (5G) mobile access and backhaul. This paper aims at clarifying possible roles of mm-wave radio in the 5G development and performing a comprehensive literature survey on mm-wave radio channel modeling essential for the feasibility study. Emphasis in the literature survey is laid on grasping the typical behavior of mm-wave channels, identifying missing features in the presently available channel models for the design and evaluation of the mm-wave radio links within the 5G context, and exemplifying different channel modeling activities through analyses performed in the authors' group. As a key technological element of the mm-wave radios, reduced complexity beamforming is also addressed. Design criteria of the beamforming are developed based on the spatial multipath characteristics of measured indoor mm-wave channels.

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Section: Mm-wave Beamformingmentioning

confidence: 99%

Channel Models and Beamforming at Millimeter-Wave Frequency Bands

Haneda

2015

IEICE Trans. Commun.

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“…Techniques like Massive MIMO with millimeter wave signaling, carrier aggregation are very popular now days. In a MIMO system an antenna array is used which uses large number of antenna elements typically ten or hundred at the transmitter and receiver side so called massive [1]. It is evolving technology which has appealed many researchers.…”

Section: Data Rate Enhancementmentioning

confidence: 99%

Recent Trends in Millimeter Wave Communication

Chikhale¹,

Deosarkar²

2017

Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)

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-In the world of mobile wireless communication delivery of content with high quality services by taking into consideration available bandwidth, speed, latency, reliability, became very essential in the fulfillment of demand of services for greatly increasing subscribers on the mobile cellular network. Among various solutions one of technology of future is millimeter wave communication. Large spectrum of available bandwidth at very high frequency range 30GHZ to 300GHZ will play a vital role along with other technologies like Massive MIMO, Mobile Cloud, Software Defined Networking, for design and operation of 5G cellular networks. It is best suited for short range line of sight communication. With modification in LTE advanced and hetnets it is possible to achieve coverage, capacity, spectral efficiency, energy efficiency and desired speed up to 1Gbps practically by the use of five channel carrier aggregation and cyclic prefix usage. This review paper basically enlightens opportunities and challenges to exploit available bandwidth using this 5G technology to fulfill the need of customers.

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“…The beam formation (BF) is a spatial signal processing technique coupled with multiple antennas (antenna array elements) that are adaptively phased to form, direct, and concentrate the beams of the radiation patern [4]. The BF algorithms can be implemented at both transmiter side (transmit beamforming) and receiver side to provide signiicantly improved array gain, higher signal-to-noise ratio (SNR), and considerable reduction in co-channel interference owing to the spatial selectivity of the directional antenna array elements.…”

Section: Antenna Beam-formationmentioning

confidence: 99%

“…The beam training (alternative solution of the conventional feedback) is employed to conigure transmit and receive BF vectors where the transmiter sends information over several beams and uses the feedback from the receiver to ind the beast beam (IEEE 802.11ad) [4]. New approaches have been developed for closed-loop spatial multiplexing based on the beam training and feedback combination such as code-book BF, BF with weight optimization based on AoD estimation, and long-term BF [4]. Introductory Chapter: Smart Antennas and Beam-formation http://dx.doi.org/10.5772/intechopen.68452 9…”

Section: Beam-formation Performance Remarksmentioning

confidence: 99%