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：US20200348389A1

公开(公告)日：2020-11-05

申请号：US16402932

申请日：2019-05-03

Applicant: NXP B.V.

Inventor： Francesco Laghezza ,  Julian Renner ,  Frans M.J. Willems ,  Semih Serbetli ,  Alex Alvarado

IPC: G01S7/00 ,  G01S13/28

Abstract: Aspects of the present disclosure are directed to radar apparatuses and methods involving the communication of data with radar signals. As may be implemented with one or more embodiments, a sequence of radar waveforms are transmitted as RF signals, the RF signals carrying communication data encoded onto a ramped radar carrier signal via phase-shift keying (PSK) modulation. Such modulation may utilize a modified, reduced-angle modulation with phase angles of less than π. Object-reflected versions of the RF signals are received and demodulated by deramping the received object-reflected versions of RF signals using a linearized version of the radar waveforms (e.g., without PSK modulation). This approach can mitigate compression peak loss.