Tài liệu Phần mềm xác định radio P1 docx
Tài liệu Phần mềm xác định radio P1 docx
... (ASICs), in which case the radio would be considered to be a digital radio but not
an SDR.
Software Based Radio 13
Figure 1.7 Conceptual definition of the software defined radio (SDR). This functional ... software signals to process the radio signal and software control of the radio parameters
as illustrated in Section 1.3.4.
1.2.1 Software Defined Radio and Software Radio
There...
Tài liệu Phần mềm xác định radio P2 docx
... ð7Þ
Software Defined Radio: Enabling Technologies42
Figure 2.11 Signal and noise levels throughout a hypothetical receiver chain
2
Radio Frequency Translation for
Software Defined Radios
Mark Beach, ... software radio.
The latter refers to a software radio with A/D conversion at the carrier frequency; the former refers to a fully flexible
and dynamically reconfigurable ‘pragmatic’ software...
Tài liệu Phần mềm xác định radio P4 docx
... radio
(SDR). Regardless of the interpretation of the definitions – software radio, software defined
radio, software based radios – the challenge of moving the analog-digital boundary closer to
the ... Software
Defined Radios
Brad Brannon, Chris Cloninger, Dimitrios Efstathiou,
Paul Hendriks, Zoran Zvonar
Analog Devices
Data converters are one of the key enabling technologies for the software...
Tài liệu Phần mềm xác định radio P6 docx
... achieved by multiplying the received signal with a respective expo-
nential function:
Software Defined Radio: Enabling Technologies160
Figure 6.6 Position of the channel-of-interest in the receive frequency ... the above results to up-conversion, it is often sufficient to keep the real part
Software Defined Radio: Enabling Technologies162
Figure 6.9 Direct realization of digital down-conversio...
Tài liệu Phần mềm xác định radio P8 docx
... signal
processing for a software defined radio. After a short introduction, the terms ‘digital radio ,
‘software radio , ‘software defined radio , and ‘cognitive radio were discussed. We then
explored ... different transmission needs.
Starting from definitions of several radio types this chapter discusses the specific features
of a software defined radio transceiver architecture and the s...
Tài liệu Phần mềm xác định radio P12 docx
... O’Fee, S.
‘European regulation of software radio and Grable, M., ‘Regulation of software defined radio – United States’ in
Tuttlebee, W. (Ed)., Software Defined Radio: Origins, Drivers and International ... for networks
to support software (defined) radios: the number of co-existing radio access standards will
be huge [23] and it can be assumed that one single radio standard will hardly...
Tài liệu Phần mềm xác định radio P13 docx
... this func-
tionality and so the Radio entity is not decomposed further in order to avoid a specification
bias to a particular approach. The abstract capabilities of a radio are therefore expressed
directly ... 250 and 2000 hops/s in 25 kHz channels from 30 to 400 MHz.
Figure 13.9 shows the interface of the radio together with a decomposition of its operating
environment into a data termi...
Tài liệu Phần mềm xác định radio P3 pptx
... While ‘pure’ software
radios anticipate analog-to-digital conversion at the antenna, dispensing with the need for this
element of the radio, today’s ‘pragmatic’ software defined radios (SDRs), still ... December, 1999.
[5] TR2.1, Software Defined Radio Forum, November, 1999.
[6] Cummings, M., ‘Time for software defined radio, ’ EE Times, March 11, 2001.
Software Defined Radio: Enabling Techn...
Tài liệu Phần mềm xác định radio P5 pdf
... to
the goals of proposed software radio architectures. For the purposes of this work, we will only
1
‘Pure’ software radio, as distinct from ‘pragmatic’ software radio, incorporates the concept ... obstacles
lies in the concepts of software radio [5]. However, realization of software radio systems
Superconductor Microelectronics: A Digital RF Technology for Software Radios 131
Table 5...
Tài liệu Phần mềm xác định radio P7 pdf
... Control applications
(peripheral IO)
DSP56600 Motorola 60 60 MIPS 16 bit fixed Cell phone and 2-way
radio
DSP56367 Motorola 150 150 MIPS 24 bit fixed Audio processing
MSC8102
(Starcore)
Motorola 300 ... including those listed below. Some of these suppliers represent long established
Software Defined Radio: Enabling Technologies210
companies, while others are relative newcomers and start-ups w...