Virtual Circuit Reservation Multiple Access -protocol for mixed voice/data radio communications

Abstract: Virtual Circuit Reservation Multiple Access protocol (VCRMA) is a hybrid protocol for mixed voice/data radio transmissions. It uses circuit-switched mode for voice and Modified Minipacket Competition Multiple Access (M-MCMA) for data. The VCRMA protocol can be used in all three types of cells: pico-, micro- and macro-. The total...

Performance Analysis of the Modified Circuit Reservation Multiple Access Protocol with Signalling Traffic aspects

The modified Circuit Reservation Multiple Access (CRMA) protocol is a new wireless communication protocol that has been proposed for the use in a cellular environment. CRMA is a hybrid Time Division Multiple Access (TDMA) / Slotted ALOHA protocol. The protocol controls the activity of the Time Division Duplexing (TDD) channel and it is able to...

Effect of Pulse Shaping on the Performance of DS-CDMA in a Multipath Fading Channel

This report gives first an overview of the main modulation methods and of the multipath propagation effects. A model is described to simulate BPSK, QPSK and OK-QPSK in some measured indoor channels. Several pulse shapes are analysed and their effects discussed on single-user systems and on DS-CDMA. The main performance parameter is the bit error...

Modification of the Circuit Reservation Multiple Access protocol for macro cell environments

The Circuit Reservation Multiple Access (CRMA) protocol is a new protocol that has been developed for wireless office communications. This hybrid Time Division Multiple Access (TDMA) / reservation ALOHA protocol is an effective multiple access scheme that integrates speech and data traffic. For the speech traffic, the allocated bandwidth is...

Spectral Efficiency of Hybrid DS/SFH CDMA System Using Analytical and Measured Macro Channel Models

This report describes a performance analysis of a multiple access scheme for a third generation wireless macrocellular system. The performance in terms of bit error probability, capacity and spectral efficiency of a Hybrid DS/SFH CDMA system is evaluated using analytical and measured CODIT Cost 207 channel models.<br/> A performance analysis of...

Performance Analysis of the Hybrid TDMA/CDMA Multiple Access Protocol for Mobile Multi-Media Communications

A novel hybrid TDMA/CDMA multiple access protocol is proposed that complies with the requirements for the future third-generation Universal Mobile Telecommunications System (UMTS). This protocol is capable of integrating a range of different types of services, like constant bitrate services (voice) and packet mode services. Its performance is...

Zeevaartgeul Moerdijk

In 1966 some communities in the western part of Noord-Brabant decided to build a harbour and industrial area (IHM) near Moerdijk. This area can be reached by ocean-going vessels. These vessels have a maximum draught of 8,40 meters. Since the closure of the Haringvliet and the Volkerak in 1970, there is deposition of silt and sand in the whole...

Performance Analysis of a Multi Carrier-TDMA/SFH-Dual Signal Receiver System using BPSK modulation in a Macrocellular Environment

The development of a third generation mobile communication network is in progress. A European project is working towards a European standard. The investigation of multiple access schemes is part of this project, as was development of the Multi Carrier TDMA/SFH Dual Signal Receiver protocol. A mobile communication system is designed based on this...

Slotted-ALOHA protocol in een micro-cellulair mobiel communicatiesysteem op de autosnelweg - met 'Rice + n Rice' fading

Onderzocht is de systeem-prestatie van het slotted-ALOHA random multiple access protocol voor mobiele communicatie op de autosnelweg, met een capture-ontvanger bij het vaste basisstation. Gekozen werd voor een micro-cellulair systeem, met de mobiele gebruikers op één rijstrook. Alle gebruikers delen eenzelfde radiokanaal voor transmissie naar...

Performance analysis of the MC-CDMA system in frequency selective slow Rayleigh fading channels, DS-CDMA or MC-CDMA?

This report describes the Bit Error Probability (BEP) performance of Multi-Carrier Code Division Multiple Access (MC-CDMA) system using the RAKE-receiver in frequency selective slow Rayleigh fading channels. The analysis has been carried out by a theoretical approach using the characteristic function method for quadratic form of Gaussian random...

Unslotted Hybrid CDMA/ISMA Protocol for Indoor Wireless Computer Communications

A hybrid Code Division Multiple Access / Inhibit Sense Multiple Access (CDMA/ISMA) protocol has been proposed as an effective multiple access scheme for Indoor Wireless Computer Communications. This new protocol combines the advantages of both CDMA and ISMA into one protocol. On the one hand the ISMA protocol introduces a limitation to the...

Evaluation and performance analysis of the Circuit Reservation Multiple Access Protocol

The Circuit Reservation Multiple Access (CRMA) protocol is a new protocol for wireless indoor communications. It integrates voice and data traffic on a Time Division Duplexed channel. As with Mthe well known Packet Reservation Multiple Access (PRMA) protocol, CRMA is a hybrid TDMA/Slotted ALOHA protocol. Speech packets follow a TDMA scheme and...

Performance analysis of a Pico-Cellular CDMA network based on Hybrid DS/SFH, DS and SFH in a Shadowed Rician Fading channel

The Pico-Cellular radio environment can be characterized by a Rician and Lognormal fading channel. The use of a slotted code division multiple access (CDMA) scheme is considered in a single picocell. The performance analysis in terms of bit error rate, throughput and delay of a hybrid Direct Sequence (DS)/Slow Frequency Hopping (SFH), DS and SFH...

Performance analysis of CDMA networks based on hybrid DS/SFH, DS and SFH techniques using analytical and measured channel models

This graduation report presents a performance analysis (in terms of bit error rate, throughput and delay) of a packet-switched CDMA (Code Division Multiple Access) network based on the hybrid DS/SFH, DS and SFH spread-spectrum multiple access (SS MA) techniques with Q- and BPSK modulation using an analytical channel model and measured channel...

Verkeersmeetsysteem voor het A13-meetpunt met een 80486 PC

De opdracht die in dit verslag is uitgewerkt, omvat het vervangen van verouderde computers van het verkeersmeetsysteem dat de vakgroep TVS gebruikt. Dit meetsysteem kan deel uitmaken van een Automatic Incident Detection systeem. In het verslag komt aan de orde hoe een keuze is gemaakt voor nieuwe hard- en software en hoe dit getest is....

Performance Analysis of the Packet Reservation Multiple Access Protocol for Speech and Data Communications

The Packet Reservation Multiple Access protocol can be used in wireless communication systems and enables dispersed terminals to transmit packetized information over a shared communication channel. The performance of the protocol depends on the values of the system variables and is calculated using a mathematical model. Besides a mathematical...

Tariefstructuren voor interconnectie bij een mobiel telecommunicatie duopolie

Na de introductie van twee concurrerende netbeheerders voor mobiele telecommunicatie in Nederland, zullen de mobiele netten samenwerken met het openbare net. Vanaf het interconnectiepunt van de netten zal over en weer afrekening van de gebruikte faciliteiten plaatsvinden. In dit verslag zijn mogelijkheden aangedragen voor tariefstructuren bij de...