Provision of sufficient transmission capacity for broadband mobile multimedia: a step toward 4G

Dinis, M.; Fernandes, J.

doi:10.1109/35.940034

Cited by 31 publications

(12 citation statements)

References 5 publications

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Section: Abstract-this Paper Proposes a New Analytical Methods For Commentioning

confidence: 99%

“…The performance of quadrature phase-shift keying (QPSK) in the presence of CCI without diversity was considered in [3]- [8]. In [3], the BER is derived in the case of a single continuous-wave (unmodulated CW) interferer. In [4], the probability distribution function of the interference is derived in closed form for the case of a single CCI.…”

Section: Abstract-this Paper Proposes a New Analytical Methods For Commentioning

confidence: 99%

“…It supports both time-division duplex and frequency-division duplex (FDD) frequency arrangements [1]- [3]. In order to combat fast fading encountered in mobile broadband wireless access, an eigenbeamformer was implemented in the transmitter that requires a low feedback bandwidth [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

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Open-Loop Beamforming for Frequency-Division Duplex Mobile Wireless Access

Dong

2007

IEEE Trans. Veh. Technol.

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An open-loop eigenbeamformer is designed for frequencydivision duplex (FDD) mobile wireless access. In this approach, the base station transmitter does not need any channel feedback nor does the mobile receiver need knowledge of the channel or the transmit beamforming weights. The transmit beamforming weights in the downlink are generated based on the estimate of the uplink spatial covariance matrix. The base station assigns multiple beamforming weights for transmission in the signal subspace, and the mobile combines signals from multiple dimensions to preserve the received signal strength against fast channel fading. Simulation results show that, when the distance between the uplink and downlink signal subspaces is negligible, the open-loop beamformer can improve the performance of FDD systems without spatial covariance matrix transformation from uplink to downlink frequency.

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Section: Abstract-this Paper Proposes a New Analytical Methods For Commentioning

confidence: 99%

Section: Abstract-this Paper Proposes a New Analytical Methods For Commentioning

confidence: 99%

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Open-Loop Beamforming for Frequency-Division Duplex Mobile Wireless Access

Dong

2007

IEEE Trans. Veh. Technol.

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“…These researches have led to subsequent generation of wireless communication systems such as 2G, 3G and 4G [17,18].…”

Section: Co-channel Interferencementioning

confidence: 99%

Minimum Cell Size for Information Capacity Increase in Cellular Wireless Network

Anang

Rpajic

Eneh

et al. 2011

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)

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“…There are other channel sounding techniques that are comparatively cheaper to implement [47,48], although with limited channel resolution, sampling rate and sensitivity. These highlighted the need for the development of a simpler architecture that can be adapted for different studies [49].…”

Section: Introductionmentioning

confidence: 99%

Wideband Sounder for Dynamic and Static Wireless Channel Characterisation: Urban Picocell Channel Model

Ndzi¹,

Stuart²,

Toautachone³

et al. 2011

PIER

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Abstract-This paper presents a high speed configurable FPGAbased wideband channel sounder with signal bandwidths up to 200 MHz and results of a study of dynamic urban picocell channel. The use of FPGA allows the sounder to be adaptable for measurements in different scenarios. Adaptable options include changes to the waveform, bandwidth, channel sampling rate and real-time averaging to improve signal-to-noise ratio in weak signal conditions. The implemented architecture has led to a 60% reduction in size and weight compared to sounders in use elsewhere making it ideal for mobile channel measurements. The study of an urban picocell channel has shown that dynamic variation due to automotive traffic introduces average signal fades of up to 5 dB but causes frequency selective fading with depths of up to 40 dB. Existing channel models assume antenna heights of more than 6 m and path lengths of more than 30 m. Therefore there is a need for shorter path models and this paper proposes a linear picocell channel model for static and dynamic urban environment.

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Provision of sufficient transmission capacity for broadband mobile multimedia: a step toward 4G

Cited by 31 publications

References 5 publications

Open-Loop Beamforming for Frequency-Division Duplex Mobile Wireless Access

Open-Loop Beamforming for Frequency-Division Duplex Mobile Wireless Access

Minimum Cell Size for Information Capacity Increase in Cellular Wireless Network

Wideband Sounder for Dynamic and Static Wireless Channel Characterisation: Urban Picocell Channel Model

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