Calibração cega de receptores cinco-portas baseada em separação cega de fontes
The exponential growth in the applications of radio frequency (RF) is accompanied by great challenges as more efficient use of spectrum as in the design of new architectures for multi-standard receivers or software defined radio (SDR) . The key challenge in designing architecture of the software def...
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| フォーマット: | doctoralThesis |
| 言語: | por |
| 出版事項: |
Universidade Federal do Rio Grande do Norte
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| オンライン･アクセス: | https://repositorio.ufrn.br/jspui/handle/123456789/15233 |
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| 要約: | The exponential growth in the applications of radio frequency (RF) is accompanied
by great challenges as more efficient use of spectrum as in the design of new architectures
for multi-standard receivers or software defined radio (SDR) .
The key challenge in designing architecture of the software defined radio is the implementation
of a wide-band receiver, reconfigurable, low cost, low power consumption,
higher level of integration and flexibility.
As a new solution of SDR design, a direct demodulator architecture, based on fiveport
technology, or multi-port demodulator, has been proposed. However, the use of
the five-port as a direct-conversion receiver requires an I/Q calibration (or regeneration)
procedure in order to generate the in-phase (I) and quadrature (Q) components of the
transmitted baseband signal.
In this work, we propose to evaluate the performance of a blind calibration technique
without additional knowledge about training or pilot sequences of the transmitted signal
based on independent component analysis for the regeneration of I/Q five-port downconversion,
by exploiting the information on the statistical properties of the three output
signals |
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