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Methods and apparatuses for signaling with geometric constellations in a Rayleigh fading channel

專利號(hào)
US11889325B2
公開日期
2024-01-30
申請(qǐng)人
Constellation Designs, LLC（US PA Wayne）
發(fā)明人
Maged F. Barsoum; Christopher R. Jones
IPC分類
H04W24/02; H04L1/00; H04L27/34; H04L5/00; H04W72/0453; H04W72/044
技術(shù)領(lǐng)域
capacity,pam,snr,optimized,pd,fading,rayleigh,in,snrs,channel
地域： PA PA Wayne

摘要

Communication systems are described that use signal constellations, which have unequally spaced (i.e. ‘geometrically’ shaped) points. In many embodiments, the communication systems use specific geometric constellations that are capacity optimized at a specific SNR, over the Rayleigh fading channel. In addition, ranges within which the constellation points of a capacity optimized constellation can be perturbed and are still likely to achieve a given percentage of the optimal capacity increase compared to a constellation that maximizes dmin, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.

說明書

FIGS. 38-43 are tables listing the constellation points corresponding to the geometric PAM-8 constellation designs optimized for PD Capacity over a Rayleigh fading channel at specific SNRs listed in FIGS. 33-37.

FIGS. 44-47 are tables showing maximum ranges for the geometric PAM-8 constellation designs optimized for PD Capacity over a Rayleigh fading channel at specific SNRs listed in FIGS. 33-37.

FIGS. 48-49 are tables showing the performance of geometric PAM-16 constellations optimized for Joint Capacity over a Rayleigh fading channel at specific SNRs in accordance with embodiments of the invention.

FIGS. 50-53 are tables listing the constellation points corresponding to the geometric PAM-16 constellation designs optimized for Joint Capacity over a Rayleigh fading channel at specific SNRs listed in FIGS. 48-49.

FIGS. 54-55 are tables showing maximum ranges for the geometric PAM-16 constellation designs optimized for Joint Capacity over a Rayleigh fading channel at specific SNRs listed in FIGS. 48-49.

FIGS. 56-59 are tables showing the performance of geometric PAM-16 constellations optimized for PD Capacity over a fa Rayleigh fading channel at specific SNRs in accordance with embodiments of the invention.

權(quán)利要求

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