Mode Division Multiplexing of LG and HG modes in Ro-FSO

Radio-over-free-space-optics (Ro-FSO) is a strongcontender for providing a ubiquitous platform for seamlessintegration of high capacity radio and optical networks withoutexpensive optical fiber cabling. This work presents mode divisionmultiplexing of LG and HG modes in a 40 GHz Ro-FSOtransmission system to realize 4 x 20Gbps over a free space opticallink under clear weather conditions. The signal-to-noise-ratio,received power and constellations will be analyzed

MDM of Hybrid Modes in Multimode Fiber

This paper reports on MDM of a combination ofhelical-phased modes comprising ring modes and HG modes.44Gbps data transmission is achieved by a wavelength divisionmultiplexing (WDM) - MDM system of two center-launchedhelical-phased ring modes and two 3μm radially offset HG modeon wavelengths 1550.12nm and 1551.72nm for a 1500m-longmultimode fiber. The power coupling coefficients, degeneratemode group delays and bit error rates are analyzed for differentHG modes and radial offsets

Comprehensive structure of novel voice priority queue scheduling system model for VoIP over WLANs

Voice over Internet Protocol (VoIP) has grown quickly in the world of telecommunication.Wireless Local Area Networks (WLANs) are the most performance assuring technology for wireless networks, and WLANs have facilitated high-rate voice services at low cost and good flexibility. In a voice conversation, each client works as a sender or a receiver depending on the direction of traffic flow over the network.A VoIP application requires high throughput, low packet loss, and a high fairness index over the network.The packets of VoIP streaming may experience drops because of the competition among the different kinds of traffic flow over the network.A VoIP application is also sensitive to delay and requires the voice packets to arrive on time from the sender to the receiver side without any delay over WLAN.The scheduling system model for VoIP traffic is an unresolved problem. The objectives of this paper are to identify scheduler issues.This comprehensive structure of Novel Voice Priority Queue (VPQ) scheduling system model for VoIP over WLAN discusses the essential background of the VPQ schedulers and algorithms.This paper also identifies the importance of the scheduling techniques over WLANs

Comprehensive structure of novel voice priority queue scheduling system model for VoIP over WLANs

Voice over Internet Protocol (VoIP) has grown quickly in the world of telecommunication.Wireless Local Area Networks (WLANs) are the most performance assuring technology for wireless networks, and WLANs have facilitated high-rate voice services at low cost and good flexibility. In a voice conversation, each client works as a sender or a receiver depending on the direction of traffic flow over the network.A VoIP application requires high throughput, low packet loss, and a high fairness index over the network.The packets of VoIP streaming may experience drops because of the competition among the different kinds of traffic flow over the network.A VoIP application is also sensitive to delay and requires the voice packets to arrive on time from the sender to the receiver side without any delay over WLAN. The scheduling system model for VoIP traffic is an unresolved problem.The objectives of this paper are to identify scheduler issues. This comprehensive structure of Novel Voice Priority Queue (VPQ) scheduling system model for VoIP over WLAN discusses the essential background of the VPQ schedulers and algorithms.This paper also identifies the importance of the scheduling techniques over WLANs