학술논문
Saddlepoint Approximations for Noncoherent Single-Antenna Rayleigh Block-Fading Channels
Document Type
Conference
Source
2019 IEEE International Symposium on Information Theory (ISIT) Information Theory (ISIT), 2019 IEEE International Symposium on. :612-616 Jul, 2019
Subject
Language
ISSN
2157-8117
Abstract
This paper presents saddlepoint approximations of state-of-the-art converse and achievability bounds for noncoherent, single-antenna, Rayleigh block-fading channels. These approximations can be calculated efficiently and are shown to be accurate for SNR values as small as 0 dB, blocklengths of 168 channel uses or more, and when the channel’s coherence interval is not smaller than two. It is demonstrated that the derived approximations recover both the normal approximation and the reliability function of the channel.