Multicarrier Code Division Multiple Access (MC-CDMA) techniques were originally proposed at mid of 90’s for wideband multi-user communications in wireless environments characterised by hostile propagation characteristics. Problems still to be solved are related to the provision of efficient resource channel allocation in variable-bit-rate transmission. In this work, the design of a MC-CDMA-based WLAN infrastructure is considered. The great advantage of MC-CDMA, i.e. the capability of supporting asynchronous multi-user variable-bit-rate (VBR) transmission over multipath channel with conventional detection, is exploited, jointly with an efficient and real-time Medium Access Control (MAC) strategy, in order to allow a significant number of VBR users to share the same bandwidth with different QoS profiles. Different classes of users will be labeled by the MAC level that has to plan a controlled access to the channel on the basis of the users’ requests and to check the possibility of assuring to them a certain Qos degree. The paper presents an overview of the system and tests its performance through extensive simulation.

QVBR-MAC: A QoS-Oriented MAC Protocol for Variable-Bit-Rate MC-CDMA Wireless LANs / Berlanda-Scorza, Giovanni; Granelli, Fabrizio; De Natale, Francesco; Sacchi, Claudio. - ELETTRONICO. - (2004).

QVBR-MAC: A QoS-Oriented MAC Protocol for Variable-Bit-Rate MC-CDMA Wireless LANs

Berlanda-Scorza, Giovanni;Granelli, Fabrizio;De Natale, Francesco;Sacchi, Claudio
2004-01-01

Abstract

Multicarrier Code Division Multiple Access (MC-CDMA) techniques were originally proposed at mid of 90’s for wideband multi-user communications in wireless environments characterised by hostile propagation characteristics. Problems still to be solved are related to the provision of efficient resource channel allocation in variable-bit-rate transmission. In this work, the design of a MC-CDMA-based WLAN infrastructure is considered. The great advantage of MC-CDMA, i.e. the capability of supporting asynchronous multi-user variable-bit-rate (VBR) transmission over multipath channel with conventional detection, is exploited, jointly with an efficient and real-time Medium Access Control (MAC) strategy, in order to allow a significant number of VBR users to share the same bandwidth with different QoS profiles. Different classes of users will be labeled by the MAC level that has to plan a controlled access to the channel on the basis of the users’ requests and to check the possibility of assuring to them a certain Qos degree. The paper presents an overview of the system and tests its performance through extensive simulation.
2004
Trento, Italia
Università degli Studi di Trento. DEPARTMENT OF INFORMATION AND COMMUNICATION TECHNOLOGY
QVBR-MAC: A QoS-Oriented MAC Protocol for Variable-Bit-Rate MC-CDMA Wireless LANs / Berlanda-Scorza, Giovanni; Granelli, Fabrizio; De Natale, Francesco; Sacchi, Claudio. - ELETTRONICO. - (2004).
Berlanda-Scorza, Giovanni; Granelli, Fabrizio; De Natale, Francesco; Sacchi, Claudio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/359191
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