Browse Conferences
Inter-Operator Cooperation Challenges in SIP-Based Service Architecture of IP Multimedia Subsystem of UMTS
One of the benefits of the evolution of the third generation mobile systemss such as UMTS (Universal Mobile Telecommunications System) toward the all-IP network architecture is to provide functionalities to support real-time multimedia serv...
TCP Performance Over UMTS Dedicated Channels with Finite RLC Buffer Size
In this paper, simulation results are presented to demonstrate the effects on the performance of a TCP connection over a UMTS dedicated channel when the size of the Acknowledged Mode Radio Link Control (AM-RLC) data buffer at the Radio Netw...
IPv6-Based Architecture for Fast and Cost-Effective Micro-Mobility Management
To improve mobility management in all IPv6-based wireless networks, optimisation work on Mobile IPv6 (MIPv6) is being standardised. The Hierarchical MIPv6 (HMIPv6) and the Fast Handovers for MIPv6 (FMIPv6) have emerged as the two most promi...
Improvements for the IPv6 Access Network Protection Protocols in Wireless Environments
Every user that joins a wireless access network to connect to the Internet expects to receive a secure and reliable service. The process of discovering other nodes on the same link as well as the recovery of routing information is known as ...
Blind Timing Synchronization for Filter-Bank Multicarrier Wireless Communications
We describe the performance of a blind timing recovery algorithm for filter bank multicarrier modulation (FBMCM) modems. Our starting point is a the maximum-likelihood criterion. From that, we present the derivation of a closed-loop tracker...
Forward-link Interference in CDMA-Based Cellular Networks
In this paper we have studied the in-band interference power caused by macro-cell base stations of a CDMA based cellular network. The impact of macro-cell load, location of the target receiver, service data rate of macro-cell users, and the...
Interference Suppression in UTRA FDD Downlink Handover Regions
It is known that significant multi-access interference is generated in a handover region in UTRA FDD downlink, particularly when both the Node-Bs involved in a handover are fully loaded. This paper investigates the use of blind minimum outp...
Sequential Decoding for Mobile Receivers
Currently many classical detection and decoding algorithms receive new attention in mobile communications. Amongst those classics are low density parity check codes [1], concatenated codes [2], weighted decoding with log-likelihood values a...
Soft Decode and Forward Improves Cooperative Communications
Mobile receivers can benefit from an increased spatial diversity through cooperation. Two relaying techniques are typically used: either Amplify and Forward (AF) or Decode and Forward (DF). This contribution presents a new technique which c...
Transmission Power Saving Methods for Multimedia Broadcast/Multicast Services in UMTS Networks
In current 3GPP R6 MBMS specifications, multimedia services are expected to be multicast/broadcast to all users or groups of users within the cell range. MBMS Counting Mechanism intends to analyse whether is more economic to transmit the mu...