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2016•International journal of advance research and innovative ideas in educationRequires access

A Review on various Mobility Models over Vehicular Ad hoc Network

Rakhi Rakhi, Lalit bansal

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Abstract

The wireless medium has limited bandwidth, higher packet error rate, and higher packet overheads that altogether limit the capacity of the network to offer guaranteed QoS. OFDM systems, also referred as Multi-carrier Systems, are known to be the basis of 3G and 4G technology, for example in LTE (Long Term Evolution) 4G cellular standards, WiMAX Standards, IEEE 802.11 a/g/n Microwave standards, etc. Thus OFDM is a key wireless broadband technology which supports high data rates. Despite of several advantages of this technique, OFDM suffers from a high PAPR which degrades BER performance and results in loss of orthogonality. In this paper, we provide a simulation based evaluation of the cyclic prefixes (Conventional/ Turbo) against various service classes and adaptive QoS modulation schemes that are the key functions in the MAC common part sub layer.

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What this paper is about

The wireless medium has limited bandwidth, higher packet error rate, and higher packet overheads that altogether limit the capacity of the network to offer guaranteed QoS. OFDM systems, also referred as Multi-carrier Systems, are known to be the basis of 3G and 4G technology, for example in LTE (Long Term Evolution) 4G cellular standards, WiMAX Standards, IEEE 802.11 a/g/n Microwave standards, etc. Thus OFDM is a key wireless broadband technology which supports high data rates. Despite of several advantages of this technique, OFDM suffers from a high PAPR which degrades BER performance and results in loss of orthogonality. In this paper, we provide a simulation based evaluation of the cyclic prefixes (Conventional/ Turbo) against various service classes and adaptive QoS modulation schemes that are the key functions in the MAC common part sub layer.

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Available abstract

The wireless medium has limited bandwidth, higher packet error rate, and higher packet overheads that altogether limit the capacity of the network to offer guaranteed QoS. OFDM systems, also referred as Multi-carrier Systems, are known to be the basis of 3G and 4G technology, for example in LTE (Long Term Evolution) 4G cellular standards, WiMAX Standards, IEEE 802.11 a/g/n Microwave standards, etc. Thus OFDM is a key wireless broadband technology which supports high data rates. Despite of several advantages of this technique, OFDM suffers from a high PAPR which degrades BER performance and results in loss of orthogonality. In this paper, we provide a simulation based evaluation of the cyclic prefixes (Conventional/ Turbo) against various service classes and adaptive QoS modulation schemes that are the key functions in the MAC common part sub layer.

Key concepts: Wireless broadband, Computer network, Computer science, Orthogonal frequency-division multiplexing, WiMAX, Cyclic prefix, Quality of service, Network packet

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