A Radio Channel Sounder for Mobile Millimeter-Wave Communications: System Implementation and Measurement Assessment

Papazian, Peter B.; Gentile, Camillo; Remley, Kate A.; Senic, Jelena; Golmie, Nada

doi:10.1109/tmtt.2016.2592530

Cited by 68 publications

(46 citation statements)

References 18 publications

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“…In addition, the field measurements in [37]- [39] show that the mmW channel delay spread can be large, reaching up to more than 100 ns, for the outdoor deployment of mmW SBSs in urban areas. To this end, for any link e(m , m), a slowvarying frequency flat fading channel h m km is considered over sub-channel k. Hence, conditioned to the link state ζ, the achievable rate for a given link e(m , m) over sub-channel k will be given by…”

Section: A Channel Modelmentioning

confidence: 99%

Inter-Operator Resource Management for Millimeter Wave Multi-Hop Backhaul Networks

Semiari

Saad

Bennis

et al. 2017

IEEE Trans. Wireless Commun.

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In this paper, a novel framework is proposed for optimizing the operation and performance of a large-scale, multihop millimeter wave (mmW) backhaul within a wireless small cell network (SCN) that encompasses multiple mobile network operators (MNOs). The proposed framework enables the small base stations (SBSs) to jointly decide on forming the multihop, mmW links over backhaul infrastructure that belongs to multiple, independent MNOs, while properly allocating resources across those links. In this regard, the problem is addressed using a novel framework based on matching theory that is composed to two, highly inter-related stages: a multi-hop network formation stage and a resource management stage. One unique feature of this framework is that it jointly accounts for both wireless channel characteristics and economic factors during both network formation and resource management. The multi-hop network formation stage is formulated as a one-to-many matching game which is solved using a novel algorithm, that builds on the so-called deferred acceptance algorithm and is shown to yield a stable and Pareto optimal multi-hop mmW backhaul network. Then, a one-to-many matching game is formulated to enable proper resource allocation across the formed multi-hop network. This game is then shown to exhibit peer effects and, as such, a novel algorithm is developed to find a stable and optimal resource management solution that can properly cope with these peer effects. Simulation results show that, with manageable complexity, the proposed framework yields substantial gains, in terms of the average sum rate, reaching up to 27% and 54%, respectively, compared to a non-cooperative scheme in which inter-operator sharing is not allowed and a random allocation approach. The results also show that our framework improves the statistics of the backhaul sum rate and provides insights on how to manage pricing and the cost of the cooperative mmW backhaul network for the MNOs.

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Section: A Channel Modelmentioning

confidence: 99%

Inter-Operator Resource Management for Millimeter Wave Multi-Hop Backhaul Networks

Semiari

Saad

Bennis

et al. 2017

IEEE Trans. Wireless Commun.

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“…Parallel to our work, three other groups have developed realtime capable mm-wave sounders: [14] recently presented a sounder based on an array of horn antennas combined with an electronic switch at the RX and a single TX antenna. This design is capable of faster sounding, and is similar in spirit to our approach; however, it can only provide angular information for RX side (though to the best of our knowledge it is being upgraded to a MIMO setup).…”

Section: Introductionmentioning

confidence: 99%

“…Pre-Amplifier (5) National Instruments PXIe-6361 (6) National Instruments PXIe-8135 (7) National Instruments PXIe-7961R (8) Phase Matrix FSW-0020 (9) Precision Test Systems GPS10eR (10) Samsung 28 GHz RFU TX (11) Samsung 28 GHz RFU RX (12) Low Pass filter (13) National Instruments PXIe-5160 (14) National Instruments HDD-8265 compared to our sounder, which can reconfigure the beampatterns through software. The sounder described in [15] is a multi-band and multi-antenna channel sounder operating at 30 GHz, 60 GHz and 90 GHz with 8 by 8, 2 by 2 and 2 by 2 antenna arrays, respectively.…”

Section: Introductionmentioning

confidence: 99%

A Real-Time Millimeter-Wave Phased Array MIMO Channel Sounder

Bas

Wang

Psychoudakis

et al. 2017

2017 IEEE 86th Vehicular Technology Conference (VTC-Fall)

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In this paper, we present a novel real-time MIMO channel sounder for 28 GHz. Until now, the common practice to investigate the directional characteristics of millimeter-wave channels has been using a rotating horn antenna. The sounder presented here is capable of performing horizontal and vertical beam steering with the help of phased arrays. Thanks to the fast beam-switching capability, the proposed sounder can perform measurements that are directionally resolved both at the transmitter (TX) and receiver (RX) as fast as 1.44 milliseconds compared to the minutes or even hours required for rotating horn antenna sounders. This does not only enable us to measure more points for better statistical inference but also allows us to perform directional analysis in dynamic environments. Equally important, the short measurement time combined with the high phase stability of our setup limits the phase drift between TX and RX, enabling phase-coherent sounding of all beam pairs even when TX and RX are physically separated and have no cabled connection for synchronization. This ensures that the measurement data is suitable for high-resolution parameter extraction algorithms. Along with the system design and specifications, this paper also discusses the measurements performed for verification of the sounder. Furthermore, we present sample measurements from a channel sounding campaign performed on a residential street.

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“…Therefore, we present a new wideband sliding correlator channel sounder [18] in Section II of this paper, that operates across 1 GHz of radio frequency (RF) bandwidth and at many mmWave frequencies. Typical state-of-the-art mmWave channel sounders can be found in [19]- [23].…”

Section: Introductionmentioning

confidence: 99%

A flexible wideband millimeter-wave channel sounder with local area and NLOS to LOS transition measurements

MacCartney

Yan

Sun

et al. 2017

2017 IEEE International Conference on Communications (ICC)

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Abstract-This paper presents a millimeter-wave (mmWave) wideband sliding correlator channel sounder with flexibility to operate at various transmission rates. The channel sounder can transmit and receive up to 1 GHz of RF null-to-null bandwidth while measuring a 2 nanosecond multipath time resolution. The system architecture takes advantage of field-programmable gate arrays (FPGAs), high-speed digital-to-analog converters (DACs), and low phase noise Rubidium (Rb) references for synchronization. Using steerable narrowbeam antennas, the system can measure up to 185 dB of path loss. The channel sounder is used to measure the directional and omnidirectional received power as a receiver transitions from line-of-sight to non-line-of-sight conditions down an urban canyon. A 25 dB drop in omnidirectional received power was observed as the receiver transitioned from line-of-sight (LOS) conditions to deeply shadowed non-LOS (NLOS) conditions. The channel sounder was also used to study signal variation and spatial consistency for a local set of receiver locations arranged in a cluster spanning a 5 m x 10 m local area, where the omnidirectional received power in LOS and NLOS environments is found to be relatively stable with standard deviations of received power of 2.2 dB and 4.3 dB, respectively. This work shows that when implementing beamforming at the transmitter at mmWave, the omnidirectional received power over a local area has little fluctuation among receiver locations separated by a few to several meters.

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A Radio Channel Sounder for Mobile Millimeter-Wave Communications: System Implementation and Measurement Assessment

Cited by 68 publications

References 18 publications

Inter-Operator Resource Management for Millimeter Wave Multi-Hop Backhaul Networks

Inter-Operator Resource Management for Millimeter Wave Multi-Hop Backhaul Networks

A Real-Time Millimeter-Wave Phased Array MIMO Channel Sounder

A flexible wideband millimeter-wave channel sounder with local area and NLOS to LOS transition measurements

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