Low-latency Ultra-Reliable 5G Communications: Finite-blocklength bounds and coding schemes
Paper in proceedings, 2017

Future autonomous systems require wireless connectivity able to support extremely stringent requirements on both latency and reliability. In this paper, we leverage recent developments in the field of finite-blocklength information theory to illustrate how to optimally design wireless systems in the presence of such stringent constraints. Focusing on a multi-antenna Rayleigh block-fading channel, we obtain bounds on the maximum number of bits that can be transmitted within given bandwidth, latency, and reliability constraints, using an orthogonal frequency-division multiplexing system similar to LTE. These bounds unveil the fundamental interplay between latency, bandwidth, rate, and reliability. Furthermore, they suggest how to optimally use the available spatial and frequency diversity. Finally, we use our bounds to benchmark the performance of an actual coding scheme involving the transmission of short packets.

Author

Johan Östman

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Giuseppe Durisi

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Erik Ström

Chalmers, Signals and Systems, Communication and Antenna Systems

Jingya Li

Ericsson

Henrik Sahlin

Ericsson

G. Liva

German Aerospace Center (DLR)

SCC 2017 - 11th International ITG Conference on Systems, Communications and Coding

11th International ITG Conference on Systems, Communications and Coding, SCC 2017
Hamburg, Germany,

Theory and practice for optimum spectral efficiency for ad-hoc wireless networks with strict requirements on latency and reliability

Swedish Research Council (VR), 2015-01-01 -- 2019-12-31.

Subject Categories

Telecommunications

Communication Systems

Signal Processing

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Latest update

3/16/2020