Title :
Synchronous and fractionally-spaced blind equalization in dually-polarized digital radio links
Author :
Raheli, Riccardo ; Picchi, Giorgio
Author_Institution :
Dipartimento di Ingegneria dell´´Informazione, Parma Univ., Italy
Abstract :
Two-dimensional equalization structures with symbol-rate or fractional tap-spacing are used to counteract the combined effects of selective fading and cross-polarization interference in dually polarized digital radio links. After generalizing the known optimum equalizers to the case of two-dimensional complex signals, steady-state analysis is presented based on the evaluation of a bound on the outage probability. Finite-length structures are considered and compared to the optimum linear receiver. The blind acquisition of two-dimensional T- and T/2-spaced equalizers is also shown by using a stop-and-go decision-directed algorithm in a simulation analysis
Keywords :
digital radio systems; electromagnetic wave polarisation; equalisers; microwave links; synchronisation; 2D equalisation structures; T-spaced equalisers; T/2-spaced equalizers; blind acquisition; cross-polarization interference; digital radio links; dually polarised radio links; fractional tap-spacing; fractionally-spaced blind equalization; microwave links; outage probability; selective fading; simulation analysis; steady-state analysis; stop-and-go decision-directed algorithm; synchronous equalisation; two-dimensional complex signals; Algorithm design and analysis; Analytical models; Blind equalizers; Digital communication; Fading; Interference; Polarization; Receivers; Signal analysis; Steady-state;
Conference_Titel :
Communications, 1991. ICC '91, Conference Record. IEEE International Conference on
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-0006-8
DOI :
10.1109/ICC.1991.162352
