Title :
DC offset canceller in a direct conversion receiver for QPSK signal reception
Author :
Yoshida, Hiroshi ; Tsurumi, Hiroshi ; Suzuki, Yasuo
Author_Institution :
Commun. & Inf. Syst. Res. Lab., Toshiba Res. & Dev. Center, Japan
Abstract :
This paper presents a method to remove the DC offset which degrades the performance of a direct conversion receiver for burst mode QPSK signals. A canceller constructed from analog and digital signal processing circuits is proposed. Computer simulation results show that the canceller has a remarkable function of reducing the degradation in BER (bit error rate) performance by only 0.4 dB. The results show that the proposed offset canceller is suitable for the reception of burst mode QPSK signals such as those employed in NADC (North American Digital Cellular) and PHS (Personal Handy-phone System)
Keywords :
analogue processing circuits; analogue-digital conversion; cellular radio; digital signal processing chips; error statistics; personal communication networks; quadrature phase shift keying; radio receivers; time division multiple access; ADC; BER; DC offset canceller; NADC; North American Digital Cellular; PHS; Personal Handy-phone System; QPSK signal reception; TDMA; analog signal processing circuits; bit error rate; burst mode QPSK signals; computer simulation results; digital signal processing circuits; direct conversion receiver; performance; Bit error rate; Circuits; Computer simulation; Degradation; Demodulation; Digital signal processing; Filters; Frequency shift keying; Quadrature phase shift keying; Receivers;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4872-9
DOI :
10.1109/PIMRC.1998.731406
