Radio device with signal compression.

摘要

A digital radio device (2) for inter alia mobile radio or cordless telephony is proposed with signal compression (12) for base band signals and/or hardlimiting at RF (6) an/or IF (10) stages. Such an architecture allows for a high level of integration with less complexity than known digital radio devices, and is thus cost saving. In an embodiments of the present invention the signal compression (12) can be carried out by a true logarithmic amplifier or by a compression device (13, 14) having a sine-shaped transfer characteristic. In succesive signal processing (24) of digitised base band signals, digital signal decompression can be carried out by using the samples of the base band signal as addresses to a decompression lookup-table. <IMAGE>