Title :
The effects of phase noise on 26 Mb/s OFDMA broadband radio in the local loop systems
Author :
Hasholzner, Ralph ; Drewes, Christian ; Hammerschmidt, Joachim S.
Author_Institution :
Inst. for Integrated Circuits, Tech. Univ. Munchen, Germany
Abstract :
The effects of phase noise on broadband radio in the local loop (BRITL) systems employing orthogonal frequency division multiple access (OFDMA) are assessed analytically and numerically. Phase noise causes a common phase error (CPE) and inter-carrier interferences (ICI). The former is easy to estimate and equalize, since it identically affects all subcarriers. It is shown that neither a significant degradation of the symbol error rate (SER) due to CPE nor a detrimental error floor due to ICI is introduced provided the constant range of the phase noise power spectral density (PSD) of the stabilized oscillator does not exceed 20 kHz. Above that limit, the SER performance is dominated by a prohibitive error floor caused by ICI
Keywords :
broadband networks; frequency division multiple access; phase noise; radio networks; radiofrequency interference; subscriber loops; 26 Mbit/s; ICI; OFDMA broadband radio; SER performance; common phase error; degradation; detrimental error floor; equalization; estimation; inter-carrier interferences; local loop systems; orthogonal frequency division multiple access; phase noise; phase noise power spectral density; prohibitive error floor; stabilized oscillator; subcarriers; symbol error rate; Bandwidth; Baseband; Costs; Digital video broadcasting; Error analysis; Fast Fourier transforms; Frequency conversion; Interference; OFDM; Phase noise;
Conference_Titel :
Broadband Communications, 1998. Accessing, Transmission, Networking. Proceedings. 1998 International Zurich Seminar on
Conference_Location :
Zurich
Print_ISBN :
0-7803-3893-6
DOI :
10.1109/IZSBC.1998.670252
