Title :
Multipath fading effects on carrier recovery of BPSK signal in digital radio
Author :
Liu, G.-S. ; Wei, C.-H.
Author_Institution :
Inst. of Electron. & Center for Telecommun. Res., Nat. Chiao-Tung Univ., Hsinchu, Taiwan
Abstract :
Tracking performance of the I-Q carrier recovery loop for BPSK signal in band-limited channel with multipath interference is analysed. The multipath fading channel is characterised by the Rummler´s simplified three-ray model (1979) for line-of-sight digital radio system. A closed-form expression for the phase-error variance related to the multipath interference, intersymbol interference and channel noise is derived. Excess phase offset induced from the multipath interference is also examined. The closed-form expression of the jitter variance can be evaluated numerically to assess the degradation of synchroniser performance. Asymptotic limits of the performance are also discussed.<>
Keywords :
digital radio systems; fading; intersymbol interference; phase shift keying; synchronisation; telecommunication channels; BPSK signal; I-Q carrier recovery loop; Rummler´s model; band-limited channel; closed-form expression; excess phase offset; intersymbol interference; jitter variance; line-of-sight digital radio system; multipath fading effects; multipath interference; phase-error variance; synchroniser performance; tracking performance;
Journal_Title :
Communications, Speech and Vision, IEE Proceedings I
