Patent ID: 9712206
Date: 2017-07-18
CPC Classifications: H04B

Claim:
1. A system for wireless communication comprising a transmitter and a receiver, wherein the transmitter is operable to wirelessly transmit digital information using a common modulation format to the receiver with a selected data transmission rate, wherein the data transmission rate can be selected from a predetermined plurality of data transmission rates, wherein the digital information is transmitted using a transmission frame including a header part and a payload part, wherein the header part comprises a preamble, wherein the preamble is transmitted first within the transmission frame, wherein the modulation format is the same for all data transmission rates, wherein the header and payload parts are transmitted at a same data rate for any of the selected data transmission rates, and wherein the receiver is configured to receive the preamble and to sample the preamble with different sample rates and select the sample rate that produces a valid preamble from the received preamble, wherein the header part comprises the preamble, and a start frame delimiter, wherein the selected sample rate from the preamble defines one of a plurality of data transmission rate groups and the start frame delimiter is configured to further define different data transmission rates within a data transmission rate group, and wherein a transmission time for the preamble and the start frame delimiter for each of the plurality of data transmission rate groups has a different length and is defined by a repetition of a chip sequence which encodes a data signal, wherein the chip sequence comprises a predefined chip pattern for each of the plurality of data transmission rate groups.