Novel Design for Short Analog Fountain Codes

Adaptive coding and modulation in current cellular networks relies on a channel quality indicator fed back from the receiver to the transmitter. The process of acquiring channel state information at the transmitter (CSIT) is estimated to take 5-8 ms. For short-packet transmissions in machine-type co...

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Veröffentlicht in:IEEE communications letters Jg. 23; H. 8; S. 1306 - 1309
Hauptverfasser: Abbas, Rana, Shirvanimoghaddam, Mahyar, Huang, Tao, Li, Yonghui, Vucetic, Branka
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.08.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Adaptive coding
Cellular communication
channel coding
Coding
Data transmission
Encoding
iterative decoding
Modulation
modulation coding
Packet switched networks
Parity check codes
Payloads
Receivers
Reliability engineering
State (computer science)
Transmitters
ISSN:1089-7798, 1558-2558
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Zusammenfassung:Adaptive coding and modulation in current cellular networks relies on a channel quality indicator fed back from the receiver to the transmitter. The process of acquiring channel state information at the transmitter (CSIT) is estimated to take 5-8 ms. For short-packet transmissions in machine-type communications (MTC), the data transmission of small payloads is estimated to take a fraction of a millisecond, i.e., a fraction of the end to end latency. This is especially problematic for ultra-reliable low-latency communications (URLLC) that require an end-to-end latency of 1 ms only. To this end, self-adaptive coding and modulation, aka rateless coding, is much needed to cater for these stringent requirements. In this letter, a new design is proposed for the recently proposed class of rateless codes, dubbed analog fountain codes (AFC), tailored for short-packet transmissions. The numerical results show no error floors down to block error rates of 10 −7 , thus meeting the ultra-high reliability requirement of URLLC.
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ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2019.2910517