-5. multipoint systems: Architecture and concepts, European Con- Lawson, I.C. and Ellershaw, J.C. (1986) Co-channel interference in ference on Radio Relay, ECRR, Munich, West Germany, pp. a cellular rural radio telephone system, IEEE International 260-267. Conference on Communications, ICC'86, Toronto, Canada, pp. Chas, P.L. and Jimenez, J. (1987) Applications and perspectives of 55.1. ISDN multiaccess systems for rural and urban applications - a Le-Ngoc, T. (1985) A random-request demand-assigned multiple view from Spain, IEEE/IECE Global Telecommunications Con- access protocol for point-to-multipoint radio systems, IEEE ference, Globcom'87, Tokyo, Japan, pp. 174-177. International Conference on Communications, ICC'85, Chi- Cox, D.C. (1982) Co-channel interference considerations in fre- cago, U.S.A., pp.744-748. quency re-use small coverage area radio systems, IEEE Trans. Le-Ngoc, T. and Zavitz, H.J. (1985) A point-to-multipoint micro- Comms, COM-30, (1). wave radio system with a random-request demand-assignment Daboual, H. Floury, G. and Garnier, C. (1981) IRT 1500 Rural time division multiple-access (RR-DA-TDMA) scheme, IEE telephony system, Commutation and Transmission, 3, (3) pp. Conference Publication No. 246, London, U.K. pp. 93-96. 39-53. Le-Ngoc, T. (1986) SR500 - A point-to-multipoint digital radio De Couesnongle, M. and Garnier, C. (1983) IRT 1500 Integrated system, IEEE International Conference on Communications, rural telephony system, Philips Telecommunications Review, ICC'86 Toronto, Canada, pp. 55.2. 41, (2). Le-Ngoc, T. Stashin, M. and El Kateeb, A. (1989) ISDN signalling De Couesnongle, M. Floury, G. and Tanguy, R. (1987) IRT 2000 and packet data support on point-to-multipoint subscriber radio subscriber multiple access radio system, Commutation and systems, IEEE International Conference on Communications, Transmission, pp.15-18. ICC'89, Boston, U.S.A. pp. 1314-1318. Dupuis, P. et. al. (1983) Millimetre wave subscriber loops, IEEE Lin, S.H. and Wolff, R.S. (1990) Basic exchange radio - from Jour