Title :
ADC offset identification and correction in DMT modems
Author :
Rudberg, Mikael Karlsson
Author_Institution :
Ericsson Components AB, Kista, Sweden
Abstract :
The possibility to identify and correct DC offset errors in time interleaved ADCs are investigated. It is shown how the offset introduced by the ADC can be identified and corrected by utilizing the knowledge about the target application. As target application the ADSL standard has been used. It is shown that an offset error from a time interleaved ADC can be handled efficiently in a wideband communication system as ADSL
Keywords :
analogue-digital conversion; digital communication; digital subscriber lines; discrete Fourier transforms; error correction; error detection; modems; quadrature amplitude modulation; ADC offset identification; ADSL standard; DMT modems; QAM constellations; discrete multitone modulation; inverse DFT; offset errors correction; symbol decoding; target application; time interleaved ADCs; wideband communication system; Bandwidth; Decoding; Error correction; Frequency domain analysis; Modems; OFDM modulation; Quadrature amplitude modulation; Quantization; Sampling methods; Wideband;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.858842
