Characterization of Fading Statistics of mmWave (28 GHz and 38 GHz) Outdoor and Indoor Radio Propagation Channels

Gulfam, Sardar Muhammad; Nawaz, Syed Junaid; Baltzis, Konstantinos B.; Ahmed, Abrar; Khan, Noor M.

doi:10.3390/technologies7010009

Cited by 4 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This revealed the reliability of this promising technology for long-range IoT communications. Gulfam et al (2019) presented a thorough analysis on the azimuthal multipath shape factors and second-order fading statistics (SOFS) of outdoor and indoor mmWave radio propagation channels. The well-established analytical relationship of plain angular statistics of a radio propagation channel with the channel's fading statistics is used to study the channel's fading characteristics.…”

mentioning

confidence: 99%

WITHDRAWN: Distance-Based Performance Evaluation of Two-Ray Ground and Free Space Propagation Models in Mobile Ad-hoc NETwork (MANET)

Hussain

2021

Preprint

View full text Add to dashboard Cite

Mobile Ad-hoc NETwork (MANET) is a decentralized type of wireless network. The network is ad hoc because it does not rely on a pre-existing infrastructure, such as routers in wired networks or access points in managed wireless networks. One of the major issue and challenging area in MANET is the process of routing due to dynamic topologies and high mobility of mobile nodes. The efficiency and accuracy of a protocol depend on many parameters in these networks. In addition to other parameters node velocity and propagation models are among them. Calculating signal strength at the receiver is the responsibility of a propagation model while the mobility of nodes is responsible for the topology of the network. A huge amount of loss in performance is occurred due to the variation of signal strength at the receiver while increasing and decreasing the distance of nodes. In this paper, a novel approach is identified and portrayed of the said propagation models based on distance from each other. It has been analyzed to check distance based performance evaluation of Two Ray Ground and Free Space Radio Wave Propagation Models on the performance of Ad-hoc On-demand Distance Vector (AODV) Routing Protocol in MANET. The simulation has been carried out in (Network Simulator-2) NS-2 by using performance metrics that are Average Throughput (kpbs), Average Latency (milliseconds) and Average Packet Drop (packets). The results predicted that propagation models and mobility have a strong influence on the performance of AODV in considered distance based scenario.

show abstract

mentioning

confidence: 99%

WITHDRAWN: Distance-Based Performance Evaluation of Two-Ray Ground and Free Space Propagation Models in Mobile Ad-hoc NETwork (MANET)

Hussain

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…On the other hand, distribution for large-scale faded channels due to shadowing is represented by log-normal distribution [5,6]. However, it is more convenient to combine both distributions in land mobile communication to express both fading effects [7,8]. Suzuki probability density function (PDF) was introduced in Reference [9] to undertake such a task.…”

Section: Introductionmentioning

confidence: 99%

Improving the Performance of Turbo-Coded Systems under Suzuki Fading Channels

Al-Askery

Al-Naji

Alsabah

2019

JLPEA

View full text Add to dashboard Cite

In this paper, the performance of coded systems is considered in the presence of Suzuki fading channels, which is a combination of both short-fading and long-fading channels. The problem in manipulating a Suzuki fading model is the complicated integration involved in the evaluation of the Suzuki probability density function (PDF). In this paper, we calculated noise PDF after the zero-forcing equalizer (ZFE) at the receiver end with several approaches. In addition, we used the derived PDF to calculate the log-likelihood ratios (LLRs) for turbo-coded systems, and results were compared to Gaussian distribution-based LLRs. The results showed a 2 dB improvement in performance compared to traditional LLRs at 10 - 6 of the bit error rate (BER) with no added complexity. Simulations were obtained utilizing the Matlab program, and results showed good improvement in the performance of the turbo-coded system with the proposed LLRs compared to Gaussian-based LLRs.

show abstract

“…Studies have explored channel characteristics by conducting channel measurements; in such studies, angular channel parameters, such as angular spread, number of beams (clusters), and delay spread within a beam, have been reported for communication based on the single-beam operation [4,[7][8][9][10][19][20][21][22][23][24][25][26][27]. In these studies, the performance of the varied propagation conditions, such as the propagation path loss models for co-and cross-polarisation [28,29] and different propagation models with directional antennas [20][21][22][23][24][25][30][31][32][33][34][35][36][37][38][39][40][41], also have been investigated for communication based on the single-beam operation.…”

mentioning

confidence: 99%

Measurement‐based delay, angular dispersion and propagation loss characteristics of outdoor propagation in beam domain and multi‐beam operation at 38 GHz for 5‐G communication systems

Cheng

Lin

Sheen

et al. 2022

IET Microwaves Antenna & Prop

View full text Add to dashboard Cite

Owing to the global bandwidth shortage in frequency bands below 6 GHz, higher frequency bands such as millimetre‐wave bands will play integral roles in fifth‐generation (5‐G) communication systems. Beamforming is necessary for high‐frequency bands to maintain system coverage and increase system capacity through spatial division multiple access. Moreover, more than one beam might be used simultaneously to enhance signal quality and prevent blockages. Recent studies have investigated, focussed on power loss characteristics in multi‐beam operation, and compared the channel characteristics for single‐beam operation. To provide robust channel characteristics, knowledge of the multipath characteristics in multi‐beam operation is required in the design of 5‐G communication systems. To fill this gap such as the multipath dispersion characteristics of outdoor‐to‐outdoor propagation in delay and angular domains, the present study analysed outdoor data measured at 38 GHz and presented the propagation losses (path losses and shadowing), root‐mean‐square delay spread, and angular spread in multi‐beam operation. We believe that the dispersion statistics (delay and angular spreads) and propagation loss characteristics in multi‐beam operation would be useful in the development of 5‐G communication systems in high‐frequency bands.

show abstract

Characterization of Fading Statistics of mmWave (28 GHz and 38 GHz) Outdoor and Indoor Radio Propagation Channels

Cited by 4 publications

References 27 publications

WITHDRAWN: Distance-Based Performance Evaluation of Two-Ray Ground and Free Space Propagation Models in Mobile Ad-hoc NETwork (MANET)

WITHDRAWN: Distance-Based Performance Evaluation of Two-Ray Ground and Free Space Propagation Models in Mobile Ad-hoc NETwork (MANET)

Improving the Performance of Turbo-Coded Systems under Suzuki Fading Channels

Measurement‐based delay, angular dispersion and propagation loss characteristics of outdoor propagation in beam domain and multi‐beam operation at 38 GHz for 5‐G communication systems

Contact Info

Product

Resources

About