We consider an orthogonal frequency division multiple access (OFDMA)-based multicast system where multiple base stations transmit a multicast session to a multicast group. The goal is to maximize the multicast rate (i.e. the minimum achievable user rate) subject to a total power constraint. We assume the use of an erasure code (e.g., a Reed–Solomon code) or rateless code (e.g., Luby transform c...

For a wireless video sensor network (WiViSeN) where video nodes have been placed at some strategic locations to capture designated scenes, an immediate challenge is to locate the base-station optimally such that the network lifetime of batterypowered video nodes can be maximized. This paper presents two schemes, one centralized and the other distributed, to obtain the optimal base-station locat...

The need to support evolving standards, rapid prototyping and fast time-to-market are some of the key reasons for desiring programmability in future wireless base-stations. However, supporting highly complex signal processing algorithms for multiple users at high data rates (in Mbps), requiring billions of operations per second, while providing power efficiency present challenges in attaining t...

We denote by Q the reference area of size Q m2. Our problem is to fully cover the area and to provide certain level of QoS for users. There are two types of Base Stations (BS) that can be used for this purpose. Macro-BSs that have large transmission ranges but their energy consumption is high, and Femto-BSs that have smaller transmission ranges and relatively smaller energy consumption. Telecom...

Dynamic adaptation of the base stations on/off activity or transmit power, according to space and time traffic variations, are measures accepted in the most contemporary resource management approaches dedicated to improving energy efficiency of cellular access networks. Practical implementation of both measures results in changes to instantaneous base station power consumption. In this paper, e...

The prediction of the handover in mobile wireless networks is an easy way of optimal disposing with radio resources and efficient increase of quality of services. The prediction can be based on the several approaches. This paper is focused on the monitoring of the history of serving and target base stations while the handover is executed. The information about previous handovers of all users ar...

The flow distribution of cellular networks fluctuates according to the changes of time and space, and this phenomenon makes the low utilization rate of some base stations. Although the base stations’ utilization rate is low, it causes the large energy consumption. The CSO can save the energy of base stations according to the load, but it is influenced by the load and the sequence of base statio...

| We consider a Code Division Multiple Access (CDMA) cellular network and propose sub-optimal multiuser detectors which exploit a type of diversity inherent in the system and are based on the processing of signals received at multiple base stations. We investigate the performance of conventional matched-lter, linear, and decision-based detection schemes, using this diversity scheme, for both sy...

We examine the impact of cell phone base stations on prices of condominiums in Hamburg, Germany. This is the first hedonic pricing study on this subject for real estates in Europe and the first worldwide which examines the price impact of base stations within a whole metropolis. We distinguish between individual masts and groups of masts. Based on a data set of over 1,000 base stations set up i...

A hybrid location finding technique based on time difference of arrival (TDOA) with round-trip time (RTT) measurements is proposed for a wideband code division multiple access (WCDMA) network. In this technique, a mobile station measures timing from at least three base stations using user equipment receive–transmit (UE Rx– Tx) time difference and at least three base stations measure timing from...