1. Sylvain (M.). Panorama des études sur les trajets multiples.Ann. Télécommun., Fr. (1985),40, n∘ 11–12, pp. 547–564.
2. Greenstein (L. J.),Czekaj-Augun (B. A.). Performance comparison among digital radio techniques subjected to multipath fading.IEEE Trans. COM, USA (May 1982),30, pp. 1184–1197.
3. Coutts (R. P.),Campbell (J. C.). Mean square error analysis ofQam digital radio systems subject to frequency selective fading.Australian Telecommunications Research (1982),16, n∘ 1, pp. 23–38.
4. Simon (M. K.),Smith (J. G.). Hexagonal multiple phase and amplitude shift keyed signal sets.IEEE Trans. COM, USA (oct. 1973),21, pp. 1108–1115.
5. Kawai (K.), Shintani (S.), Yanagidaira (H.). Optimum combination of amplitude and phase modulation scheme and its application to data transmissionmodem.Int. Conf. Communications Rec., Philadelphia, Pa. (1972).