公开(公告)号：US10523474B1

公开(公告)日：2019-12-31

申请号：US16006989

申请日：2018-06-13

Applicant: NXP B.V.

Inventor： Yunus Can Gultekin ,  Wim van Houtum ,  Frans M. J. Willems ,  Semih Serbetli

IPC: H04B1/10 ,  H04L25/03 ,  H04L27/04 ,  H04W52/02

Abstract: Certain aspects of the disclosure are directed to a method for communicating data from a transmitting circuit to a receiving circuit over a noisy channel. The method can be performed by logic circuitry, and can include encoding data, for transmission over the noisy channel. The data can be encoded, as a shaped-coded modulation signal by shaping the signal based on an amplitude selection algorithm that leads to a symmetrical input and by constructing a trellis having a bounded-energy sequence of amplitude values selected by computing and storing a plurality of channel-related energy constraints based on use of a nonlinear-estimation process, and therein providing an index for the bounded-energy sequence of amplitudes. The method can also include receiving over the noisy channel, the shaped-coded modulation signal, and decoding the data from the shaped-coded modulation signal by using the index to reconstruct the bounded-energy sequence of amplitudes.

公开(公告)号：US20190386857A1

公开(公告)日：2019-12-19

申请号：US16006989

申请日：2018-06-13

Applicant: NXP B.V.

Inventor： Yunus Can Gultekin ,  Wim van Houtum ,  Frans M.J. Willems ,  Semih Serbetli

IPC: H04L25/03 ,  H04L27/04

Abstract: Certain aspects of the disclosure are directed to a method for communicating data from a transmitting circuit to a receiving circuit over a noisy channel. The method can be performed by logic circuitry, and can include encoding data, for transmission over the noisy channel. The data can be encoded, as a shaped-coded modulation signal by shaping the signal based on an amplitude selection algorithm that leads to a symmetrical input and by constructing a trellis having a bounded-energy sequence of amplitude values selected by computing and storing a plurality of channel-related energy constraints based on use of a nonlinear-estimation process, and therein providing an index for the bounded-energy sequence of amplitudes. The method can also include receiving over the noisy channel, the shaped-coded modulation signal, and decoding the data from the shaped-coded modulation signal by using the index to reconstruct the bounded-energy sequence of amplitudes.

公开(公告)号：US10530630B2

公开(公告)日：2020-01-07

申请号：US16028651

申请日：2018-07-06

Applicant: NXP B.V.

Inventor： Yunus Can Gultekin ,  Frans Willems ,  Wim Van Houtum ,  Semih Serbetli

IPC: H04L5/12 ,  H04L27/36 ,  H04L1/00 ,  H04L27/34 ,  H04W4/44 ,  H04L27/26 ,  H04W52/02 ,  H04W52/24 ,  H03M13/27 ,  H03M13/25 ,  H03M13/00

Abstract: An input selector for selecting an input of a convolution encoder of a transmitter is disclosed. The input selector comprises a shaper block and an input-select block. The shaper block is configured to receive an input comprising a first number of input bits, the shaper block configured to generate a shaped bit stream corresponding to the first number of input bits. The input-select block is configured to generate an encoder input bit stream for the encoder based on the shaped bit stream, wherein the input-select block generates the encoder input bit stream such that, when input into the encoder, a first bit of the encoder input bit stream sets a state of the encoder in order that a subsequent second bit of the encoder input bit stream causes the encoder to generate a bit of the shaped bit stream at a pre-determined position in an encoder output bit stream.

公开(公告)号：US10523480B1

公开(公告)日：2019-12-31

申请号：US16184370

申请日：2018-11-08

Applicant: NXP B.V.

Inventor： Yunus Can Gultekin ,  Frans M. J. Willems ,  Wim van Houtum ,  Semih Serbetli

IPC: H04L27/00 ,  H04L27/02

Abstract: A method for k-bit Enumerative Sphere Shaping (ESS) of multidimensional constellations includes converting a first set of a plurality of uniformly distributed data bits from a serial data bit stream to a first unsigned amplitude sequence comprising a plurality of amplitudes bounded by a spherical constellation of maximum energy levels of a plurality of energy levels, wherein the first unsigned amplitude sequence has a Gaussian distribution and each of the energy levels is determined by a respective one of the amplitudes in the amplitude sequence. The first unsigned amplitude sequence is converted to a first shaped data bit sequence. The first shaped data bit sequence is combined with a second set of a one or more uniformly distributed data bits from the serial data bit stream to form a combined data stream. The combined data stream is mapped to a combined amplitude stream.