A MPR optimization algorithm for FSO communication system with star topology

Zhao, Linlin; Chi, Xuefen; Guan, Lin

doi:10.1016/j.optcom.2015.07.050

Cited by 11 publications

(5 citation statements)

References 29 publications

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“…In this paper, the coordinator uses the MMSE based SIC algorithm [14] and the device having higher LOS channel gain is decoded first. We assume that the number of devices is N = 10 except for the scenario of Fig.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…The receiver with MPR capability simultaneously decodes multiple signals transmitted from different devices. MPR can be implemented with the PHY layer techniques, such as successive interference cancellation (SIC), directional antennas and multiple-input-multiple-output (MIMO) techniques [13], [14]. It can also be implemented with the ZigZag decoding [15] in the MAC layer.…”

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confidence: 99%

“…This is an important application scenario, since there will be a large amount of M2M traffic in the uplink of 5G systems. Similar to [14] and [19], we employ the MIMO-SIC algorithm as the MPR technique to avoid collisions. For the VLC random access system with MIMO-SIC, the set of transmitting devices in each time slot is random, which means the group of the concurrently transmitting devices and their decoding order are both random.…”

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confidence: 99%

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Optimal ALOHA-Like Random Access With Heterogeneous QoS Guarantees for Multi-Packet Reception Aided Visible Light Communications

Zhao

Chi

Yang

2016

IEEE Trans. Wireless Commun.

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There is a paucity of random access protocols designed for alleviating collisions in visible light communication (VLC) systems, where carrier sensing is hard to be achieved due to the directionality of light. To resolve the problem of collisions, we adopt the successive interference cancellation (SIC) algorithm to enable the coordinator to simultaneously communicate with multiple devices, which is referred to as the multipacket reception (MPR) capability. However, the MPR capability could be fully utilized only when random access algorithms are properly designed. Considering the characteristics of the SIC aided random access VLC system, we propose a novel effective capacity (EC)-based ALOHA-like distributed random access algorithm for MPR-aided uplink VLC systems having heterogeneous quality-of-service (QoS) guarantees. Firstly, we model the VLC network as a conflict graph and derive the EC for each device. Then, we formulate the VLC QoS-guaranteed random access problem as a saturation throughput maximization problem subject to multiple statistical QoS constraints. Finally, the resultant non-concave optimization problem (OP) is solved by a memetic search algorithm relying on invasive weed optimization and differential evolution (IWO-DE). We demonstrate that our derived EC expression matches the Monte Carlo simulation results accurately, and the performance of our proposed algorithms is competitive. Index Terms-Visible light communication (VLC), multipacket reception (MPR), random access, heterogeneous QoS, effective capacity (EC), saturation throughput maximization.Linlin Zhao received her B.Eng. and M.S. degrees from the

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Section: Simulation Results and Discussionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Optimal ALOHA-Like Random Access With Heterogeneous QoS Guarantees for Multi-Packet Reception Aided Visible Light Communications

Zhao

Chi

Yang

2016

IEEE Trans. Wireless Commun.

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“…Star topology [21] is employed to handle this mapping (see Figure 5). In this type of structure, multiple transitions are enabled at the same time, and any of them may fire.…”

Section: Figure 3 Illustration Of Two-way Synchronizationmentioning

confidence: 99%

A Data Synchronization Model and Approach Based on Petri Net for Soft PLC Systems

Yang¹,

Li²,

Wang³

et al. 2017

IJCA

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“…WDM provides point to point link connectivity from a single Optical Line Terminal (OLT) to each Optical Network Terminal (ONT) with uniquely assigned wavelengths to the users [7]. The application of WDM to the next-generation FSO access network has a focus on high bit rate, scalability, and flexibility [12]. In this paper we propose the simulative optical WDM transmitter and receiver with free space optical communication reported in Section 2.…”

Section: Introductionmentioning

confidence: 99%

Performance Investigation of 40 GB/s DWDM over Free Space Optical Communication System Using RZ Modulation Format

Parkash

Sharma

Singh

2016

Advances in Optical Technologies

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We successfully demonstrate 40 GB/s 8 channels' Dense Wavelength Division Multiplexing (DWDM) over free space optical (FSO) communication system. Each channel is transmitting 5 GB/s data rate in downstream separated by 0.8 nm (100 GHz) channel spacing with 1.8 GHz filter bandwidth. DWDM over FSO communication system is very effective in providing high data rate transmission with very low bit error rate (BER). The maximum reach of designed system is 4000 m without any compensation scheme. The simulation work reports minimum BER for Return-to-Zero (RZ) modulation format at different channels 1, 4, and 8 are found to be 2.32 −17 , 1.70 −16 , and 9.51 −15 at 4000 m distance, respectively. Sharp increase in BER occurs if data rate and distance increase up to 10 GB/s and 5000 m.

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A MPR optimization algorithm for FSO communication system with star topology

Cited by 11 publications

References 29 publications

Optimal ALOHA-Like Random Access With Heterogeneous QoS Guarantees for Multi-Packet Reception Aided Visible Light Communications

Optimal ALOHA-Like Random Access With Heterogeneous QoS Guarantees for Multi-Packet Reception Aided Visible Light Communications

A Data Synchronization Model and Approach Based on Petri Net for Soft PLC Systems

Performance Investigation of 40 GB/s DWDM over Free Space Optical Communication System Using RZ Modulation Format

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