Software Radio

Mitola, Joseph

doi:10.1002/0471219282.eot262

Cited by 13 publications

(10 citation statements)

References 27 publications

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“…In a system operating at the rated speed and RF frequencies [1], the (broadband) RF frontend will typically be more similar to that in Figure 1 and these issues must of course be dealt with to adequately fulfill required radio performance parameters 4 . Following the complex down-conversion is channel filtering (ensuring proper selectivity) and down-sampling to reduce the computational burden in the downstream signal processing blocks.…”

Section: Architecturementioning

confidence: 99%

Software Defined Radio Prototyping with Visual C++ Express and Code Composer Studio

Wichlund¹

2012

WET

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The primary goal of this project was educational: to demonstrate Software Defined Radio based prototyping using Visual C++ Express and Code Composer Studio. More specifically an IEEE802.11a Phy [1] compliant baseband processor was written in C++ and a radio link demonstrated "live" using a standard PCand the DSK6713 kit from Spectrum Digital [2] for baseband processing at the receiver and transmitter side respectively. To reduce costs without loss of educational value (the algorithms remains the same), the bandwidth was scaled down from 20MHz to 6 kHz to be able to utilize cheap narrowband COTS RF frontends operating at an intermediate frequency of only 12 kHz at the transmitter and receiver sides. This was easily achieved by just reducing the OFDM symbol rate by a suitable factor. The development process is described in detail, emphasizing development tricks to facilitate debugging of this kind of complex baseband processing. For educational purposes some other simpler waveforms was implemented as well.

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Section: Architecturementioning

confidence: 99%

Software Defined Radio Prototyping with Visual C++ Express and Code Composer Studio

Wichlund¹

2012

WET

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“…ease of development, with the possibility to re-use previous designs and change the design even at a very late stage of the development, opportunity to use common hardware for different radios, turning to the possibility to design multi-standard radio, etc.. Joe Mitola [18] formalized the software radio ideas in 1991 and this was the beginning of the spread of these ideas to the whole research community.…”

Section: Software Defined Radio Designmentioning

confidence: 99%

“…It is out of the scope of this paper to deal with the hardware platform and radio processing (see [18][21] [22] for that). This paper focuses on the management features for cognitive radio equipments, and SDR management is a part of this issue, from our point of view.…”

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confidence: 99%

High-Level Design Approach for the Specification of Cognitive Radio Equipments Management APIs

Moy

2009

J Netw Syst Manage

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Cognitive Radio (CR) equipments are radio devices that support the smart facilities offered by future cognitive networks. Even if several categories of equipments exist (terminal, base station, smart PDA, etc.), each requiring different processing capabilities (and associated cost or power consumption), these equipments have to integrate also a set of new capabilities as regards CR support, in addition to the usual radio signal processing elements. This implies real-time radio adaptation and sensing capabilities, but not only. We assert that it is necessary to add inside the radio equipments some management facilities for that purpose, and we propose in this paper a high-level design approach for the specification of a management framework. This includes a set of designing rules, based on hierarchical units that are distributed over three levels, and the associated APIs necessary to efficiently manage CR features inside a CR equipment. The proposed architecture is called HDCRAM (Hierarchical and Distributed Cognitive Architecture Management). HDCRAM is an extension of a former hierarchical and distributed reconfiguration management (HDReM) architecture, which is derived from our previous research on Software Defined Radio (SDR). The HDCRAM adds to the HDReM's reconfiguration management facilities the necessary new management features, which enable the support of sensing and decision making facilities. It consists in the combination of one Cognitive Radio Management Unit (CRMU) with eachReconfiguration Management Unit (ReMU) IntroductionThe design of cognitive radio (CR) equipments will not be done efficiently if one uses the same tools as those used for the design of conventional radio equipments. One reason is that designing such a radio device is not solely a radio signal processing issue anymore. Of course, as in many other industrial domains, such as aeronautics, it becomes a hardware/software mixed issue with a plurality of capabilities and running modes on the one hand. But on the other hand, designing cognitive radio equipments also consists in designing the necessary management needed to support the real-time sensing of the environment and the real-time adaptation of the signal processing. Signal processing in our approach is not restricted to the physical layer and also includes all layers' signal processing, up to the application layer. Another reason is that the range of ways a CR equipment will have to run, will be very wide compared to that of the current radio equipment operation. Abstraction is necessary during the design phase of a CR equipment. In this respect, this paper proposes a high-level design approach, 2 integrating the design rules needed for the management of the signal processing operators, as well as the exploration means as regards the operation modes.Even if designing the signal processing part of a radio chain is not an easy task, it is however usual. The new design aspect lies in the management part and the associated impact on the signal processing, which has to be fl...

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“…The architecture based on the software defined radio concept [2] relies on the conversion of input signal, performed at the carrier frequency. In the frequency range up to 100 GHz, the using of RSFQ (Rapid Single Flux Quantum) logic is a promising way, allowing ultra-fast data conversion and signal processing [3].…”

Section: Rsfq Data Convertersmentioning

confidence: 99%

“…The input signal is supplied by the antenna and conditioned by the Low Noise Amplifier and band-pass filter described in this article. The RSFQ electronic is based on the superconducting Josephson Junctions (JJ) which can reach extremely fast switching time (in order of ps) [2]. In the RSFQ band-pass Σ-∆ A/D converters, the input stage is formed by a one bit modulator (comparator) realized by the JJ (see Fig.…”

Section: Rsfq Data Convertersmentioning

confidence: 99%

Superconducting NbN band-pass filter and matching circuit for 30 GHz RSFQ data converter

Michal

Bouat

Villégier

et al. 2009

2009 19th International Conference Radioelektronika

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Software Radio

Cited by 13 publications

References 27 publications

Software Defined Radio Prototyping with Visual C++ Express and Code Composer Studio

Software Defined Radio Prototyping with Visual C++ Express and Code Composer Studio

High-Level Design Approach for the Specification of Cognitive Radio Equipments Management APIs

Superconducting NbN band-pass filter and matching circuit for 30 GHz RSFQ data converter

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