Pilot-Assisted Short-Packet Transmission over Multiantenna Fading Channels: A 5G Case Study
Conference contribution, 2018

Leveraging recent results in finite-blocklength information theory, we investigate the problem of designing a control channel in a 5G system. The setup involves the transmission, under stringent latency and reliability constraints, of a short data packet containing a small information payload, over a propagation channel that offers limited frequency diversity and no time diversity. We present an achievability bound, built upon the random-coding union bound with parameter s (Martinez & Guillén i Fàbregas, 2011), which relies on quadrature phase-shift keying modulation, pilot-assisted transmission to estimate the fading channel, and scaled nearest-neighbor decoding at the receiver. Using our achievability bound, we determine how many pilot symbols should be transmitted to optimally trade between channel-estimation errors and rate loss due to pilot overhead. Our analysis also reveals the importance of using multiple antennas at the transmitter and/or the receiver to provide the spatial diversity needed to meet the stringent reliability constraint.

machine-type communications

multiple antennas

finite-blocklength information theory

ultra-reliable low-latency communications

fading channels

Author

Guido Ferrante

Chalmers, Electrical Engineering, Kommunikationssystem, informationsteori och antenner, Communication Systems

Johan Östman

Chalmers, Electrical Engineering, Kommunikationssystem, informationsteori och antenner, Communication Systems

Giuseppe Durisi

Chalmers, Electrical Engineering, Kommunikationssystem, informationsteori och antenner, Communication Systems

Kittipong Kittichokechai

Ericsson AB

52th Annual Conference on Information Sciences and Systems (CISS)
Princeton, NJ, USA,

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 -- 2018-12-31.

SWIFT : short-packet wireless information theory

Swedish Research Council (VR), 2017-01-01 -- 2020-12-31.

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1109/CISS.2018.8362303

More information

Latest update

1/7/2019 2