Patent ID: 9742461
Date: 2017-08-22
CPC Classifications: H04B,H04L

Claim:
1. A system providing a spread spectrum and a narrowband data transmission, the system comprising: a direct sequence spread spectrum (DSSS) transmitter converting a bit succession (d a DSSS receiver using a transmission channel to receive impulses (s(t)) sent by the transmitter, and to filter the received impulses (r(t)) using a filter having an impulse response (x(t)) dependent on the chip sequence (c wherein for the spread spectrum data transmission the chip sequence (c wherein for the narrowband data transmission a chip sequence (c the DSSS transmitter is designed to transmit the succession of impulses at an adjustable symbol rate (T the symbol rate for a spread spectrum data transmission corresponds to a prescribable first symbol rate (T the symbol rate for a narrowband transmission corresponds to a prescribable second symbol rate, which is reduced in comparison with the first symbol rate (T