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In this paper, we model a Virtual MIMO system using a game-theoretic approach. We are interested in the uplink, considering a non-coopertive game, where each user try to satisfy a quality of service. The uplink of a direct-sequence code division multiple access (DS-CDMA) data network is considered and a non-cooperative game is proposed in which users are allowed to choose their uplink receivers as...
Acompact size dual element multiple-input-multiple-output (MIMO) antenna system operating in the 2.6 GHz band is proposed for long term evolution (LTE) terminal. The proposed MIMO antenna system is based on meander line antennas, and covers the band from 2570–2620MHz. With the introduction of a GND plane structure, the designed MIMO system has an isolation of more than 30dB and radiation efficiency...
A multiple antenna system for mobile handset application is proposed. The proposed multiple antenna system consists of planar inverted-F antenna (PIFA) for mobile operation and a shorted monopole MIMO antenna with a decoupling network for WLAN operation. By adding a λ/4 open stub to PIFA, an additional resonance at 2 GHz band was generated and consequently the impedance matching characteristic was...
Wireless backhaul has been received much attention as an enabler of future broadband mobile communication systems because it can reduce deployment cost of pico-cells, an essential part of high capacity system. A high performance network in terms of high throughput, low average delay and low packet loss rate, is highly appreciated to sustain the increasing proliferation in multimedia transmissions...
This paper discusses the physical layer abstraction algorithms for the integration of next-generation high-speed wireless local area network (WLAN) based on 802.11n and Long term evolution (LTE) cellular mobile communication network. Both the received bit information rate (RBIR) algorithm and the exponential effective signal-to-noise-ratio (SNR) mapping (EESM) algorithm are compared and analyzed in...
Spatial processing techniques are considered as means to enhance the performance of WLANs systems. Not only the physical layer parameters are the ones to influence the performances of mobile MIMO (Multiple Input Multiple Output) systems, so in this paper we evaluate how are the transmission reliability and achievable throughput influenced by the packet length. Channel state information at the transmitter...
Since the IEEE 802.11n is implemented with OFDM (orthogonal frequency division multiplexing) and MIMO (multiple input multiple output) techniques, the maximum transmission rate can achieve up to 600 Mbps. As compared with the mobile wireless broadband technology, the maximum transmission rate of 3.5 G (HSDPA) and Mobile WiMAX is apparently insufficient (i.e. less than 4Mbps in the upstream) whereas...
Summary form only given. In this talk, we discuss the cross-layer optimization issues in wireless networks by investigating the impact of physical (PHY) layers on the media access control (MAC) and higher protocol layers, or vice versa. In particular, we explore the benefits of cross-layer design for multi-user multi-input multi-output (MU-MIMO) cellular mobile networks, wireless local area networks...
The mobile Internet has finally arrived with the sky-rocketing usage increase of HSPA. LTE, WiMAX and evolved WiFi are the upcoming wireless standards which are based on OFDM and MIMO. The mentioned standards have already started the evolution process with LTE-advanced, IEEE 802.16m and IEEE 802.11n. New technology building blocks are on its way like cooperative MIMO, relaying and self-organizing...
Cooperative communication has been recently proposed as a way to provide dramatic gains in slow fading wireless environments. Most literatures about cooperative communication assume each node is equipped with only one interface or several homogeneous interfaces. To date, mobile terminals with heterogeneous interfaces become more popular, which motivate us to study cooperative communication in cellular...
With the rapid growth of user demands, and the limitations of third generation (3G) mobile communication systems, it is expected that fourth generation (4G) mobile systems are likely to reach the consumer market in another 4-5 years. 4G systems are expected to become a platform capable of providing increased bandwidth, higher data rates, and greater interoperability across communication protocols,...
The following topics are dealt with: IP network security; wireless security; network topology; power line communication; intelligent transportation; cryptography; P2P streaming; wireless communication; wireless channel; network traffic; routing protocol; security protocols; resource management; ad hoc network; wireless sensor network; MAC protocol; power control; QoS; scheduling; coding; modulation;...
This paper investigates the effective gain of antennas in indoor channels. A metric called instantaneous effective gain is proposed, and a multiple-cluster 3D channel model is used to facilitate the proposed antenna effective gain. In the multiple-cluster channel model, Laplacian and double exponential distribution are utilized to model azimuth and elevation signal power distribution respectively,...
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