Performance Analysis for SDMA mmWave Systems: Using an Approximate Closed-Form Solution of Downlink Sum-Rate

Bai, Lin; Tian, Li; Xiao, Zhenyu; Choi, Jinho

doi:10.1109/access.2017.2734739

Cited by 11 publications

(3 citation statements)

References 28 publications

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“…Following the principles proposed in [27], we have the following results for the service beam. Assumption 2.…”

Section: Performance Evaluationmentioning

confidence: 99%

A Spectrum-Saving Transmission Method in Multi-Antenna Satellite Communication Star Networks: Sharing the Frequency with Terminals

Hao²,

Yue

2023

Entropy

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Satellite communication networks have gradually been recognized as an effective way to enhance the ground-based wireless communication. Considering the weight restriction of payloads, multi-antenna technologies have recently come into use on satellite platforms, and are capable of generating beams flexibly to provide services. To avoid incurring interferences, adjacent beams are designed to take different spectral resources. Unfortunately, this may limit the simultaneously accessed terminals since the spectrum cannot be fully used. In this paper, we propose a spectrum-saving transmission method in a satellite star network, where terminals communicate with each other through the hub station. Taking advantage of the great transmission capability differences of the hub station and terminals, we could allocate them the same spectral resources. Specifically, it is not necessary to use exclusive frequency bands for terminals.The proposed method can play a significant role when large numbers of users need to access the system with limited spectrum resource. To give a deep insight into the spectrum-saving method, the expressions of ergodic sum-rate are provided, and the impact of the number of accessed terminals is further analyzed. Simulation results validate the advantage of the proposed method in terms of bit error rate and ergodic sum rate.

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“…Following the principles proposed in [27], we have the following results for the service beam. Assumption 2.…”

Section: Performance Evaluationmentioning

confidence: 99%

A Spectrum-Saving Transmission Method in Multi-Antenna Satellite Communication Star Networks: Sharing the Frequency with Terminals

Hao²,

Yue

2023

Entropy

Self Cite

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show abstract

“…So, the path angles in (3) are drawn independently and uniformly from the angle-book, Φ ≜ 2 In the sequel, the term "angle" will denote the sine of a physical angle. 3 We consider equal path loss in each cascaded link through the IRSs [11]. A precise choice of the path losses of these links depends on the exact IRS locations, and optimizing these values is beyond the scope of this paper.…”

Section: < L a T E X I T S H A 1 _ B A S E 6 4 = " V + F D Z F C B V ...mentioning

confidence: 99%

“…For the sake of exposition, we consider that all cascaded paths through the IRS have same average energy, similar to[24]. However, our results can be directly extended to scenarios where the paths have unequal energies.…”

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confidence: 99%

Cascaded Channel Estimation for Distributed IRS Aided mmWave Massive MIMO Systems

Yashvanth

Murthy

2022

GLOBECOM 2022 - 2022 IEEE Global Communications Conference

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Intelligent reflecting surfaces (IRSs) were introduced in the literature in order to enhance the performance of the wireless systems. However, from a cellular service provider's point of view, a concern with the use of an IRS is its effect on out-of-band (OOB) quality of service. Specifically, if there are two operators, say X and Y, providing services in a given geographical area using non-overlapping frequency bands, and if operator X uses an IRS to optimally enhance the throughput of it's users, does the IRS degrade the performance of operator Y? We study this scenario by analyzing the ergodic sum-rates achieved by both the operators under round-robin scheduling. We also derive the complementary cumulative distribution function of the change in the effective channel gain at an OOB user with and without the IRS, which provides deeper insights into the effect of the IRS on the overall channel quality. Surprisingly, we find that even though the IRS is randomly configured from operator Y's point of view, the OOB operator still benefits from the presence of the IRS, witnessing a performance enhancement for free. This happens because the IRS introduces additional paths between the transmitter and receiver, increasing the overall signal power arriving at the receiver and providing diversity benefits. We verify our findings via numerical simulations, and conclude that an IRS is always beneficial to every operator, even when the IRS is deployed to optimally serve only one operator in the system.

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Instantaneous Interference Evaluation Model for Smart Antennas in 5G Ultra-Dense Networks

Давыдов

Fokin

Moroz

et al. 2022

Lecture Notes in Computer Science

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Performance Analysis for SDMA mmWave Systems: Using an Approximate Closed-Form Solution of Downlink Sum-Rate

Cited by 11 publications

References 28 publications

A Spectrum-Saving Transmission Method in Multi-Antenna Satellite Communication Star Networks: Sharing the Frequency with Terminals

A Spectrum-Saving Transmission Method in Multi-Antenna Satellite Communication Star Networks: Sharing the Frequency with Terminals

Cascaded Channel Estimation for Distributed IRS Aided mmWave Massive MIMO Systems

Instantaneous Interference Evaluation Model for Smart Antennas in 5G Ultra-Dense Networks

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