Patent ID: 9325549
Filing Date: 2016-04-26
CPC Classification: H04L

Claim Text:
1. A converter unit for an M-order digital modulation, the convertor unit being arranged to map L input binary sequences of N bits onto M complex values, the M complex values being transmitted through a communication channel, M=2 N , L and N being positive integers, the converter unit comprising: an input for receiving a respective input binary sequence, the converter unit being arranged to individually convert each N bits of the input binary sequence into a real number to obtain a sequence of real numbers with N real numbers, corresponding to the input binary sequence, the converter unit being arranged to execute complex arithmetic operations on the sequence of real numbers, to compute a respective complex value of the M complex values, the respective complex value corresponding to said respective input binary sequence, and to map the computed M complex values onto a single constellation diagram; wherein the M-order digital modulation is an eight-order Phase Shift Keying, the respective input binary sequence of N bits has three bits and the sequence with N real numbers has three real numbers; and wherein the real number of the sequence is equivalent to 1 when the corresponding bit of the input binary sequence is equivalent to a binary 0, wherein the real number is equivalent to −1 when the corresponding bit of the respective input binary sequence is equivalent to a binary 1, and wherein the converter unit is arranged to: compute a first sum of a first real number multiplied by the imaginary number j, with a second real number, compute a difference of a third real number and the imaginary number j, compute a real part of a first multiplication of the first sum with said difference, compute a second sum (z with a second multiplication of a second number equivalent to with the modulus of said real part, and compute the complex value corresponding to the input binary sequence as a third multiplication of said first sum with said second sum.