Spread spectrum for radio LANs

Spread spectrum techniques have been proposed for radio LAN systems in Europe and America. The principal motivation is the low mutual interference between spread spectrum and narrowband systems spectrally cohabiting. Theoretically, such systems could co-exist but detailed investigation is required to determine whether this would be satisfactory. This paper discusses other attributes of spread spectrum techniques, namely their resistance to channel effects and the availability of spread spectrum multiple access or CDMA, with respect to their use in radio LAN systems. The proposed terminal information rates range from 200 kbit/s to 20 Mbit/s and the spectral bandwidths from 30 MHz to 200 MHz, the higher information rate systems being allocated the larger bandwidths