Matches in SemOpenAlex for { <https://semopenalex.org/work/W10851> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W10851 abstract "Analogue implementations of quadrature modulation circuits are usually imperfect and suffer from several impairments. Among these impairments, the amplitude imbalance and phase imbalance are the major source of signal distortions especially for direct conversion schemes. The imperfection contributes to the distortion of signal constellation and spurious tones at the transmitter, and also affects the steady state lock point at the receiver. The imperfect rendered from such a quadrature modulation scheme inevitably degrades the system performance. In this thesis, two kinds of mathematic models are proposed. One of them is an equivalent baseband matrix model. Another is a modulated signal mathematic model. Base on our research, a least square estimation method is adapted at the transmitter by means of amplitude of modulated signal, and a compensation method is achieved backward in baseband before the quadrature modulator. At the receiver, maximum likelihood (ML) estimation is used to detect the imbalances from the transmitter and receiver. A compensation method reaches the solution of compensation at the receiver. We also prove the efficient algorithms by the simulation result. Channel coding technologies can be a general error correction technology. With Viterbi decoder algorithm and Turbo code, the simulations for the imbalance effect on the performance of the system have been done. These simulation results show that Turbo code as well as Viterbi decoding has powerful correction ability to the I/Q imbalances" @default.
- W10851 created "2016-06-24" @default.
- W10851 creator A5031894101 @default.
- W10851 date "2002-01-01" @default.
- W10851 modified "2023-09-24" @default.
- W10851 title "The effects of I/Q imbalance of the performances of QPSK in uncoded and coded schemes : imbalance detection and compensation techniques" @default.
- W10851 hasPublicationYear "2002" @default.
- W10851 type Work @default.
- W10851 sameAs 10851 @default.
- W10851 citedByCount "0" @default.
- W10851 crossrefType "dissertation" @default.
- W10851 hasAuthorship W10851A5031894101 @default.
- W10851 hasConcept C11413529 @default.
- W10851 hasConcept C117379686 @default.
- W10851 hasConcept C127162648 @default.
- W10851 hasConcept C127413603 @default.
- W10851 hasConcept C154945302 @default.
- W10851 hasConcept C186378180 @default.
- W10851 hasConcept C24326235 @default.
- W10851 hasConcept C2775924081 @default.
- W10851 hasConcept C2776257435 @default.
- W10851 hasConcept C41008148 @default.
- W10851 hasConcept C47446073 @default.
- W10851 hasConcept C47798520 @default.
- W10851 hasConcept C56296756 @default.
- W10851 hasConcept C57273362 @default.
- W10851 hasConcept C65165936 @default.
- W10851 hasConcept C76155785 @default.
- W10851 hasConceptScore W10851C11413529 @default.
- W10851 hasConceptScore W10851C117379686 @default.
- W10851 hasConceptScore W10851C127162648 @default.
- W10851 hasConceptScore W10851C127413603 @default.
- W10851 hasConceptScore W10851C154945302 @default.
- W10851 hasConceptScore W10851C186378180 @default.
- W10851 hasConceptScore W10851C24326235 @default.
- W10851 hasConceptScore W10851C2775924081 @default.
- W10851 hasConceptScore W10851C2776257435 @default.
- W10851 hasConceptScore W10851C41008148 @default.
- W10851 hasConceptScore W10851C47446073 @default.
- W10851 hasConceptScore W10851C47798520 @default.
- W10851 hasConceptScore W10851C56296756 @default.
- W10851 hasConceptScore W10851C57273362 @default.
- W10851 hasConceptScore W10851C65165936 @default.
- W10851 hasConceptScore W10851C76155785 @default.
- W10851 hasLocation W108511 @default.
- W10851 hasOpenAccess W10851 @default.
- W10851 hasPrimaryLocation W108511 @default.
- W10851 hasRelatedWork W1994820194 @default.
- W10851 hasRelatedWork W2048552645 @default.
- W10851 hasRelatedWork W2056835041 @default.
- W10851 hasRelatedWork W2108913266 @default.
- W10851 hasRelatedWork W2123238946 @default.
- W10851 hasRelatedWork W2142622303 @default.
- W10851 hasRelatedWork W2146317813 @default.
- W10851 hasRelatedWork W2165254589 @default.
- W10851 hasRelatedWork W2188540364 @default.
- W10851 hasRelatedWork W2256146405 @default.
- W10851 hasRelatedWork W2354016653 @default.
- W10851 hasRelatedWork W2505577332 @default.
- W10851 hasRelatedWork W2544515834 @default.
- W10851 hasRelatedWork W2781356165 @default.
- W10851 hasRelatedWork W2801089436 @default.
- W10851 hasRelatedWork W2803520792 @default.
- W10851 hasRelatedWork W2914443942 @default.
- W10851 hasRelatedWork W3094258328 @default.
- W10851 hasRelatedWork W3157075419 @default.
- W10851 hasRelatedWork W3197119206 @default.
- W10851 isParatext "false" @default.
- W10851 isRetracted "false" @default.
- W10851 magId "10851" @default.
- W10851 workType "dissertation" @default.