A compressive sensing (CS) based mobile video communication system is proposed to meet the requirement that video service needs low-complexity video encoder in the mobile internet. In this system, the mobile client uses CS based video encoder having low computational complexity and power, and then its output bit-stream is decoded using CS recovery algorithm in the fixed base station or network ...

IP multicast allows the efficient support of group communication services. The increase in the use of multicast has also triggered the need for supporting IP multicast in mobile environments. It is necessary to consider current unicast mobility management solutions in IP-based networks to smoothly extend multicast services to mobile users. Proxy Mobile IPv6 is a network-based mobility managemen...

A new approach for multi-antenna broadcast channels in cellular networks based on multiuser diversity concept is introduced. The technique called Opportunistic Interference Management (OIM), achieves Dirty Paper Coding (DPC) capacity asymptotically with minimum feedback required. When there are K antennas at the base station with M mobile users in the cell, the proposed technique only requires ...

Background: Rapid advances in technology, especially in the field of telecommunication, have led to extraordinary levels of mothers’ exposures to radiofrequency electromagnetic fields (RF-EMFs) prior to or during pregnancy.Objective: The main goal of this study was to answer this question whether exposure of women to common sources of RF-EMFs either prior to or during pregnancy is related to ...

—This paper examines the technique of conserving energy in 3G cellular systems by allowing calls between a mobile and the base station to be forwarded by some other mobile in the cell. This “stretched” call has the benefit of reducing overall energy cost for the call in cases where the calling mobile is NLOS (Non Line of Sight) to the base station but is LOS to the intermediary and the intermed...

AbstructDynamic Channel allocation in Cellular Networks have become very popular off late due to the flexibility obtained by using any of the available channels in any cell as long as the Interference level is below a given threshold. In our problem we study Cellular networks under Dynamic Channel Allocation and propose a Two Dimensional Markov Chain model to analyze the performance of the syst...

In this paper, we analyze the effect of bursty packet losses, caused by a correlation in the multipath fading process, on the throughput and delay performance of a multichannel wireless access protocol. equal-capacity, orthogonal, traffic channels are shared by mobile users ( ) on the uplink (mobile-to-base station link). Transmission attempts on the uplink are made based on the busy/idle statu...

The MC-CDMA (multi-carrier code division multiple access) technique is known to be appropriate for high data-rate wireless communications such as mobile multimedia communication due to its robustness to multipath fading and its capability of handling high data rates with a simple onetap equalizer. In this paper, the performance of an MC-CDMA system employing antenna array at the base station in...

In this paper we present a location-based routing protocol called Partial-partition Avoiding Geographic Routing-Mobile (PAGER-M), for mobile sensor networks that consist of frequently moving sensors. The protocol uses the location information of sensors and the base station to assign a cost function to each sensor node, which is close to the Euclidean length of a sensor node’s shortest path to ...

This paper deals with the maximum likelihood estimation of the multichannel impulse response in a mobile communication system whose base stations are equipped with antennas arrays. The following problem is solved: using the training sequence, find the maximum likelihood multichannel impulse response from one mobile to the base station under a reduced rank constraint in the presence of gaussian ...