LDPC code design for quadrature-quadrature phase shift keying

Fei Wang; Jian Liu; Shuai Wang

doi:10.1109/ICCSN.2017.8230070

LDPC code design for quadrature-quadrature phase shift keying

Fei Wang, Jian Liu, Shuai Wang

Beijing Institute of Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Citations (Scopus)

Abstract

We introduce a model of a combination of particular low density parity check (LDPC) code and quadrature-quadrature phase shift keying (Q²PSK) constellation for the application of the downlink of the unmanned aerial vehicle (UAV) data chain. This model is a modification of the combination of LDPC code and constant envelope Q²PSK (CEQ²PSK) constellation. It achieves higher bandwidth efficiency of 4/3 times while ensures high power utilization and not increases the complexity of the algorithm implementation. The encoding algorithm of the particular LDPC code which can make the envelope of the output signal of Q²PSK to be a constant is the focal point of this paper. However, the model we proposed suffers from a loss of about 0.82dB compared with the unmodified model at bit error rate (BER) of 10^-6. Considering the downlink is mainly used to transmit telemetry image data, and the impact of 0.82dB on such data is reflected by the fact that the images restored at the receiving end are slightly blurred, so we believe that it is acceptable to use the sacrifice of 0.82dB reliability for higher bandwidth efficiency.

Original language	English
Title of host publication	2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	15-19
Number of pages	5
ISBN (Electronic)	9781509038220
DOIs	https://doi.org/10.1109/ICCSN.2017.8230070
Publication status	Published - 19 Dec 2017
Event	9th IEEE International Conference on Communication Software and Networks, ICCSN 2017 - Guangzhou, China Duration: 6 May 2017 → 8 May 2017

Publication series

Name	2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017
Volume	2017-January

Conference

Conference	9th IEEE International Conference on Communication Software and Networks, ICCSN 2017
Country/Territory	China
City	Guangzhou
Period	6/05/17 → 8/05/17

Keywords

bandwidth efficiency
bit error rate
constant envelope
downlink
low density parity check code
quadrature-quadrature phase shift keying

Access to Document

10.1109/ICCSN.2017.8230070

Cite this

Wang, F., Liu, J., & Wang, S. (2017). LDPC code design for quadrature-quadrature phase shift keying. In 2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017 (pp. 15-19). (2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017; Vol. 2017-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICCSN.2017.8230070

@inproceedings{b625c058932145dea1d4759482dbe6d3,

title = "LDPC code design for quadrature-quadrature phase shift keying",

abstract = "We introduce a model of a combination of particular low density parity check (LDPC) code and quadrature-quadrature phase shift keying (Q2PSK) constellation for the application of the downlink of the unmanned aerial vehicle (UAV) data chain. This model is a modification of the combination of LDPC code and constant envelope Q2PSK (CEQ2PSK) constellation. It achieves higher bandwidth efficiency of 4/3 times while ensures high power utilization and not increases the complexity of the algorithm implementation. The encoding algorithm of the particular LDPC code which can make the envelope of the output signal of Q2PSK to be a constant is the focal point of this paper. However, the model we proposed suffers from a loss of about 0.82dB compared with the unmodified model at bit error rate (BER) of 10-6. Considering the downlink is mainly used to transmit telemetry image data, and the impact of 0.82dB on such data is reflected by the fact that the images restored at the receiving end are slightly blurred, so we believe that it is acceptable to use the sacrifice of 0.82dB reliability for higher bandwidth efficiency.",

keywords = "bandwidth efficiency, bit error rate, constant envelope, downlink, low density parity check code, quadrature-quadrature phase shift keying",

author = "Fei Wang and Jian Liu and Shuai Wang",

note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017 ; Conference date: 06-05-2017 Through 08-05-2017",

year = "2017",

month = dec,

day = "19",

doi = "10.1109/ICCSN.2017.8230070",

language = "English",

series = "2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "15--19",

booktitle = "2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017",

address = "United States",

}

Wang, F, Liu, J & Wang, S 2017, LDPC code design for quadrature-quadrature phase shift keying. in 2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017. 2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017, vol. 2017-January, Institute of Electrical and Electronics Engineers Inc., pp. 15-19, 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017, Guangzhou, China, 6/05/17. https://doi.org/10.1109/ICCSN.2017.8230070

LDPC code design for quadrature-quadrature phase shift keying. / Wang, Fei; Liu, Jian; Wang, Shuai.
2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 15-19 (2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017; Vol. 2017-January).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - LDPC code design for quadrature-quadrature phase shift keying

AU - Wang, Fei

AU - Liu, Jian

AU - Wang, Shuai

PY - 2017/12/19

Y1 - 2017/12/19

N2 - We introduce a model of a combination of particular low density parity check (LDPC) code and quadrature-quadrature phase shift keying (Q2PSK) constellation for the application of the downlink of the unmanned aerial vehicle (UAV) data chain. This model is a modification of the combination of LDPC code and constant envelope Q2PSK (CEQ2PSK) constellation. It achieves higher bandwidth efficiency of 4/3 times while ensures high power utilization and not increases the complexity of the algorithm implementation. The encoding algorithm of the particular LDPC code which can make the envelope of the output signal of Q2PSK to be a constant is the focal point of this paper. However, the model we proposed suffers from a loss of about 0.82dB compared with the unmodified model at bit error rate (BER) of 10-6. Considering the downlink is mainly used to transmit telemetry image data, and the impact of 0.82dB on such data is reflected by the fact that the images restored at the receiving end are slightly blurred, so we believe that it is acceptable to use the sacrifice of 0.82dB reliability for higher bandwidth efficiency.

AB - We introduce a model of a combination of particular low density parity check (LDPC) code and quadrature-quadrature phase shift keying (Q2PSK) constellation for the application of the downlink of the unmanned aerial vehicle (UAV) data chain. This model is a modification of the combination of LDPC code and constant envelope Q2PSK (CEQ2PSK) constellation. It achieves higher bandwidth efficiency of 4/3 times while ensures high power utilization and not increases the complexity of the algorithm implementation. The encoding algorithm of the particular LDPC code which can make the envelope of the output signal of Q2PSK to be a constant is the focal point of this paper. However, the model we proposed suffers from a loss of about 0.82dB compared with the unmodified model at bit error rate (BER) of 10-6. Considering the downlink is mainly used to transmit telemetry image data, and the impact of 0.82dB on such data is reflected by the fact that the images restored at the receiving end are slightly blurred, so we believe that it is acceptable to use the sacrifice of 0.82dB reliability for higher bandwidth efficiency.

KW - bandwidth efficiency

KW - bit error rate

KW - constant envelope

KW - downlink

KW - low density parity check code

KW - quadrature-quadrature phase shift keying

UR - http://www.scopus.com/inward/record.url?scp=85049197835&partnerID=8YFLogxK

U2 - 10.1109/ICCSN.2017.8230070

DO - 10.1109/ICCSN.2017.8230070

M3 - Conference contribution

AN - SCOPUS:85049197835

T3 - 2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017

SP - 15

EP - 19

BT - 2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017

Y2 - 6 May 2017 through 8 May 2017

ER -

Wang F, Liu J, Wang S. LDPC code design for quadrature-quadrature phase shift keying. In 2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017. Institute of Electrical and Electronics Engineers Inc. 2017. p. 15-19. (2017 9th IEEE International Conference on Communication Software and Networks, ICCSN 2017). doi: 10.1109/ICCSN.2017.8230070

LDPC code design for quadrature-quadrature phase shift keying

Abstract

Publication series

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Cite this