Coexistence Analysis and Cognitive Opportunities Selection in GSM Bands

Marques, Paulo; Marques, Hugo; Ribeiro, José Carlos; Gameiro, Atílio

doi:10.1109/vetecs.2009.5073448

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…The measurements are described in the Portuguese frequency allocation context. This work complements the one presented in [1] which presents the period of time of opportunities distribution for a GSM900 band in a mobile situation. This work goes beyond other spectrum occupational articles [2]- [6] in the way that it tries to model the spectrum occupancy.…”

Section: Introductionmentioning

confidence: 57%

GSM downlink spectrum occupancy modeling

Mendes

Gonçalves

Gameiro

2011

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications

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In this article the spectrum occupancy of a GSM900 and a DCS1800 band as an analog power or binary quantized power is modeled. In the case of analog power it is presented histograms of the power distribution during one working day. In the case of quantized power it presents the two time statistics, the time period of opportunities distribution and the time between opportunities distribution. The measurement setup is standing in line of sight with the base station. Also, the measurement setup in terms of maximum sensitivity is described and analyzed. Spectrum non occupancy, for a working day, in terms of total time for the GSM900 band and for the DCS1800 band is given.

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Section: Introductionmentioning

confidence: 57%

GSM downlink spectrum occupancy modeling

Mendes

Gonçalves

Gameiro

2011

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications

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“…For our approach we have chosen energy detection based on periodogram computation, since it is a low complex method that can be easily implemented on SDR systems, and has been reported previously to effectively sense GSM spectrum [31]. …”

Section: Cognitive Mobile Btsmentioning

confidence: 99%

A Cognitive Mobile BTS Solution with Software-Defined Radioelectric Sensing

Munoz-Castaner

Vales‐Alonso

García

et al. 2013

Sensors

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Private communications inside large vehicles such as ships may be effectively provided using standard cellular systems. In this paper we propose a new solution based on software-defined radio with electromagnetic sensing support. Software-defined radio allows low-cost developments and, potentially, added-value services not available in commercial cellular networks. The platform of reference, OpenBTS, only supports single-channel cells. Our proposal, however, has the ability of changing BTS channel frequency without disrupting ongoing communications. This ability should be mandatory in vehicular environments, where neighbouring cell configurations may change rapidly, so a moving cell must be reconfigured in real-time to avoid interferences. Full details about frequency occupancy sensing and the channel reselection procedure are provided in this paper. Moreover, a procedure for fast terminal detection is proposed. This may be decisive in emergency situations, e.g., if someone falls overboard. Different tests confirm the feasibility of our proposal and its compatibility with commercial GSM terminals.

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