Telecommunication method with polar constellations and corresponding devices
AssigneeOrange
InventorBruno Jahan
Life of this patent
Estimating the term…
Abstract
A telecommunication method which includes mapping, by a mapper, input data to points of a constellation, modulating, by a modulator, points of the constellation to generate modulated symbols, and transmitting a radio signal representative of the modulated symbols. The constellation includes a set of N points, the coordinates of which expressed in polar form αn X ejφn, n = 1,..., N, referred to as polar coordinates, are determined such that an+1 = an + p, p > 0, the real number being the pitch amplitude of the constellation.
Claims13
A telecommunication method implemented by a telecommunication equipment and comprising:
- mapping, by a mapper input data to points of an N-order constellation comprising a set of N points, the coordinates of which expressed in polar form an × ejφn, called polar coordinates, such that an+1 = an + p, with p being the amplitude pitch of the constellation, p > 0 being a real number;
- modulating, by a modulator ,points of the constellation in order to generate modulated symbols;
- transmitting a radio signal representing the modulated symbols;
- wherein a1 > 0, and the polar coordinates are determined per quadrant with a value taken from among {π/2, π, 2π} and such that per quadrant φn+1 = φn + p′, with p′ ≥ 0 being a real number and with n = 1, ..., M and M ∈{N/4, N/2, N}.
A reception method implemented by a telecommunication equipment and comprising:
- receiving a radio signal representing modulated symbols;
- demodulating, by a demodulator the modulated symbols in order to estimate points of a constellation;
- detnapping, by a detnapper ,points of the constellation in order to estimate data mapped to these constellation points;
- wherein the constellation comprises a set of N points, the coordinates of which expressed in polar form an × ejφn, called polar coordinates, are such that an+1 = an + p, p > 0 being a real number which is the amplitude pitch of the constellation, a1 > 0, and such that they are determined per quadrant with a value taken from among {π/2, π, 2π} and such that per quadrant φn+1 = φn + p′, with p′ ≥ 0 being a real number and with n = 1, ..., M and M with a value taken from among {N/4, N/2, N}.
A telecommunication equipment which comprises:
- a mapper which maps input data to points of a constellation, the constellation comprising a set of N points, the coordinates of which expressed in polar form an × ejφn, called polar coordinates, are such that an+1 = an + p, p > 0 being a real number which is the amplitude pitch of the constellation, a1 > 0, and such that they are determined per quadrant with a value taken from among {π/2, π, 2π} and such that per quadrant φn+1 = φn + p′, with p′ ≥ 0 being a real number and with n = 1, ..., M and M with a value taken from among {N/4, N/2, N};
- a modulator which modulates points of the constellation and generating modulated symbols;
- and
- a transmitter which transmits a radio signal representing the modulated symbols.
A telecommunication equipment which comprises:
- a receiver which receives a radio signal representing modulated symbols;
- a demodulator which demodulates the modulated symbols and estimating points of a constellation, the constellation comprising a set of N points, the coordinates of which expressed in polar form an × ejφn, called polar coordinates, are such that an+1 = an + p, p > 0 being a real number which is the amplitude pitch of the constellation, a1 > 0, and such that they are determined per quadrant with a value taken from among {π/2, π, 2π and such that per quadrant φn+1 = φn + p′, with p′ ≥ 0 being a real number and with n = 1, ..., M and M with a value taken from among {N/4, N/ 2,N};
- a demapper which demaps the points of the constellation and estimating data mapped to these constellation points.
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Dependencies are inferred from the claim text.