DocumentCode :
1669034
Title :
Filter coefficient interpolated timing recovery in sampled coherent PSK receivers
Author :
McLane, P.J. ; Choy, Wallace ; Tay, T.
Author_Institution :
Dept. of Electr. Eng., Queen´´s Univ., Kingston, Ont., Canada
fYear :
1992
Firstpage :
472
Abstract :
Timing recovery from input phase shift keying (PSK) receiver samples is considered for a Nyquist data transmission link. Adjustment of the timing phase of the input analog-to-digital (A/D) converter is not allowed, and thus timing recovery is based completely on received samples and is asynchronous with the A/D converter. To improve timing resolution over that provided by oversampling and decimation alone, the concept of filter coefficient interpolation is evaluated for a steam transmission, coherent, Nyquist-filtered, binary-PSK (BPSK) modem. This is a low-complexity, table lookup method that is useful in low-consumed-power radio modems. Performance is presented for E b/N0 down to 0 dB, and loop filtering is used to extend the threshold Eb/N0 for successful receiver operation. The timing loop is shown analytically to converge in the mean-square sense. The training mode of the coherent modem, is discussed
Keywords :
filters; interpolation; modems; phase shift keying; radio receivers; ADC; Nyquist data transmission link; Nyquist filtered BPSK modem; binary-PSK; coherent modem; filter coefficient interpolation; loop filtering; phase shift keying; radio modems; sampled coherent PSK receivers; table lookup method; timing loop; timing phase; timing recovery; timing resolution; training mode; Analog-digital conversion; Binary phase shift keying; Data communication; Filtering; Filters; Interpolation; Modems; Phase shift keying; Table lookup; Timing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 1992. Conference Record., GLOBECOM '92. Communication for Global Users., IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0608-2
Type :
conf
DOI :
10.1109/GLOCOM.1992.276548
Filename :
276548
Link To Document :
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