5G Small Cell Backhaul: A Solution Based on GSM-Aided Hybrid Beamforming

Idowu-Bismark, Olabode; Oyeleke, Oluseun; Atayero, Aderemi A.; Idachaba, F.E.

doi:10.5815/ijcnis.2019.08.03

Cited by 5 publications

(3 citation statements)

References 22 publications

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“…But this scheme used a table-driven mechanism and improves the delay, therefore may not be optimum for massive MIMO networks. Olabode Idowu-Bismark et al [19] proposed a new novel methodology for achieving high channel capacity in massive MIMO systems for wireless backhauling and proposed generalized spatial modulation aided hybrid beam forming (GSMA-HBF) for high energy efficiency. Author in [20], proposed support detection algorithm for efficient channel estimation for 5G technology using massive MIMO systems and SD algorithm channel estimation divided into sub issues.…”

Section: Related Workmentioning

confidence: 99%

Channel Estimation of massive MIMO Using Code Shift Keying Pilot Symbols (CSK-PS)

Matta¹,

Siddaiah.²

2022

IJIGSP

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The increasing demand for bandwidth by mobile users in wireless communication becomes a challenging issue to the research community. Several theories and models have been proposed to mitigate this issue. The most effective and commonly used approach to resolve the demand shortage of bandwidth is the massive Multi-Input and Multi-Output (MIMO) approach in which the number of transmitting and receiving antennas is placed at the base station (BS) to fulfill the issue of bandwidth. However, this technique suffers from various issues in estimating the channel due to interference, beamforming, and pilot contamination. In this paper, a novel channel estimation technique is being proposed using Code Shifting Keying symbols as pilot signals (CSK-PS) to minimize the pilot contamination. These signals are used as reference signals and the received signal is detected. The presented approach reduces the interference (pilot contamination) and improves the channel estimation in massive MIMO networks by using the modified expected propagation estimation method (MEPE). The presented approach is validated using mat-lab.

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Section: Related Workmentioning

confidence: 99%

Channel Estimation of massive MIMO Using Code Shift Keying Pilot Symbols (CSK-PS)

Matta¹,

Siddaiah.²

2022

IJIGSP

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“…[2] , which are not available in the current WiMAX, HSPA+ and LTE cellular systems. 3DBF will be used for backhauling aggregate traffic from huge users, massive machines, and millions of sensors and forwarding the same to the core network [3] . The beamforming and spatial multiplexing technologies facilitate the wireless multipoint-to-point backhaul to hook up dense small cells for data traffic evacuation.…”

Section: Introductionmentioning

confidence: 99%

Modelling the elevation power angle spectrum of a MIMO channel

Idowu-Bismark,

Oyeleke,

Idowu-Bismark

2023

Comput. Telecommun. Eng.

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<p>Multiple-Input Multiple-Output (MIMO) channel modelling is constantly researched, and the innovation of its three-dimensional (3D) models is the introduction of the elevation domain parameters, in particular the elevation angle of arrival (EOA) and elevation angle of departure (EOD) where their power angle spectrum (PAS) and their angular spread (AS) greatly impact the 3D MIMO performance. PAS is the basic characteristic used to estimate and model angular dispersion in wireless channels. Propagating signal waves are constrained into a path having an angle within which the power is contained. One of the scenes that will have a significant effect on these parameters is the relative height between the BS and the building. They will also depend on the distance between the base station (BS) and the user equipment (UE). In this work, we investigate the effect of distance and height on the power angle spectrum of a street canyon and a high-rise scenario in the urban environment. The wireless Insite X3D ray tracing engine and a 3D digital map of the environment were used for the simulation. It is seen that the elevation power spectrum (EPS) in the elevation domain decreases with distance and height in both scenarios for the arrival and departure. The appearance of multiple peaks leads to a double-normal distribution in the arrival of the high-rise as height increases, which is a result of reflections from multiple clusters. The azimuth power spectrum (APS) in the azimuth domain also decreases with distance and height at the arrival but increases with distance and height at the departure. The result of the power angle spectrum in this work can be used for modelling angular dispersion as well as designing adaptive antennas for wireless communication.</p>

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“…The use of wireless backhaul for small cells requires a high data rate that mmWave frequencies can offer due to its availability of broader bandwidth. However, its implementation has significant issues, including high pathloss, severe penetration loss, and its resulting channel being poorly scattered [6], [7]. The use of massive MIMO combined with mmWave for backhaul employing beamforming at the BS offers solutions to solve the above challenges [8].…”

Section: Introductionmentioning

confidence: 99%

Fifth-generation small cell backhaul capacity enhancement and large-scale parameter effect

Idowu-Bismark

Idachaba

Atayero

2023

IJECE

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<span lang="EN-US">The proliferation of handheld devices has continued to push the demand for higher data rates. Network providers will use small cells as an overlay to macrocell in fifth-generation (5G) for network capacity enhancement. The current cellular wireless backhauls suffer from the problem of insufficient backhaul capacity to cater to the new small cell deployment scenarios. Using the 3D digital map of Lagos Island in the Wireless InSite, small cells are deployed on a street canyon and in high-rise scenarios to simulate the backhaul links to the small cells at 28 GHz center frequency and 100 MHz bandwidth. Using a user-defined signal to interference plus noise ratio-throughput (SINR-throughput) table based on an adaptive modulation and coding scheme (MCS), the throughput values were generated based on the equation specified by 3GPP TS 38.306 V15.2.0 0, which estimates the peak data rate based on the modulation order and coding rate for each data stream calculated by the propagation model. Finding shows achieved channel capacity is comparable with gigabit passive optical networks (GPON) used in fiber to the ‘X’ (FTTX) for backhauling small cells. The effect of channel parameters such as root mean squared (RMS) delay spread and RMS angular spread on channel capacity are also investigated and explained.</span>

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5G Small Cell Backhaul: A Solution Based on GSM-Aided Hybrid Beamforming

Cited by 5 publications

References 22 publications

Channel Estimation of massive MIMO Using Code Shift Keying Pilot Symbols (CSK-PS)

Channel Estimation of massive MIMO Using Code Shift Keying Pilot Symbols (CSK-PS)

Modelling the elevation power angle spectrum of a MIMO channel

Fifth-generation small cell backhaul capacity enhancement and large-scale parameter effect

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