On the achievable rates of full-duplex Gaussian relay channel

Zhengchuan Chen, Pingyi Fan, Dapeng Wu, Ke Xiong, Khaled Letaief

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In full-duplex Gaussian relay channels, neither Decode-and-Forward (DF) nor Compress-and-Forward (CF) can achieve a larger rate than the other for all the channel gain combinations. Combining DF and CF strategies, we show that a new achievable rate, which is the concave envelop of the maximal rate achieved by DF and CF with respect to the source power, is achievable. To this end, we actively adjust the transmission power of the source for different time and switch the transmission strategy between DF and CF according to the source power. It is proved that when the signal to noise ratio (SNR) of the source-destination link falls into a certain range, the new achievable rate is strictly larger than that achieved by pure DF and pure CF. The optimal power allocation and corresponding time proportions are also obtained. Numerical results show that the new achievable rate is also competitive with the rate achieved by superposing CF on DF. As strategy switching avoids complex codeword constructions, it is more practical than superposition structures to be implemented in relay systems.

Original languageEnglish
Title of host publication2014 IEEE Global Communications Conference, GLOBECOM 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4342-4346
Number of pages5
ISBN (Electronic)9781479935116
DOIs
Publication statusPublished - 9 Feb 2014
Externally publishedYes
Event2014 IEEE Global Communications Conference, GLOBECOM 2014 - Austin, United States
Duration: 8 Dec 201412 Dec 2014

Other

Other2014 IEEE Global Communications Conference, GLOBECOM 2014
CountryUnited States
CityAustin
Period8/12/1412/12/14

Fingerprint

Power transmission
Signal to noise ratio
Switches
time

Keywords

  • Achievable rate
  • Compress-forward (CF)
  • Decode-forward (DF)
  • Gaussian relay channel

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Communication

Cite this

Chen, Z., Fan, P., Wu, D., Xiong, K., & Letaief, K. (2014). On the achievable rates of full-duplex Gaussian relay channel. In 2014 IEEE Global Communications Conference, GLOBECOM 2014 (pp. 4342-4346). [7037490] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/GLOCOM.2014.7037490

On the achievable rates of full-duplex Gaussian relay channel. / Chen, Zhengchuan; Fan, Pingyi; Wu, Dapeng; Xiong, Ke; Letaief, Khaled.

2014 IEEE Global Communications Conference, GLOBECOM 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 4342-4346 7037490.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Chen, Z, Fan, P, Wu, D, Xiong, K & Letaief, K 2014, On the achievable rates of full-duplex Gaussian relay channel. in 2014 IEEE Global Communications Conference, GLOBECOM 2014., 7037490, Institute of Electrical and Electronics Engineers Inc., pp. 4342-4346, 2014 IEEE Global Communications Conference, GLOBECOM 2014, Austin, United States, 8/12/14. https://doi.org/10.1109/GLOCOM.2014.7037490
Chen Z, Fan P, Wu D, Xiong K, Letaief K. On the achievable rates of full-duplex Gaussian relay channel. In 2014 IEEE Global Communications Conference, GLOBECOM 2014. Institute of Electrical and Electronics Engineers Inc. 2014. p. 4342-4346. 7037490 https://doi.org/10.1109/GLOCOM.2014.7037490
Chen, Zhengchuan ; Fan, Pingyi ; Wu, Dapeng ; Xiong, Ke ; Letaief, Khaled. / On the achievable rates of full-duplex Gaussian relay channel. 2014 IEEE Global Communications Conference, GLOBECOM 2014. Institute of Electrical and Electronics Engineers Inc., 2014. pp. 4342-4346
@inproceedings{13759d9594c741dd9ae17de21d8d190f,
title = "On the achievable rates of full-duplex Gaussian relay channel",
abstract = "In full-duplex Gaussian relay channels, neither Decode-and-Forward (DF) nor Compress-and-Forward (CF) can achieve a larger rate than the other for all the channel gain combinations. Combining DF and CF strategies, we show that a new achievable rate, which is the concave envelop of the maximal rate achieved by DF and CF with respect to the source power, is achievable. To this end, we actively adjust the transmission power of the source for different time and switch the transmission strategy between DF and CF according to the source power. It is proved that when the signal to noise ratio (SNR) of the source-destination link falls into a certain range, the new achievable rate is strictly larger than that achieved by pure DF and pure CF. The optimal power allocation and corresponding time proportions are also obtained. Numerical results show that the new achievable rate is also competitive with the rate achieved by superposing CF on DF. As strategy switching avoids complex codeword constructions, it is more practical than superposition structures to be implemented in relay systems.",
keywords = "Achievable rate, Compress-forward (CF), Decode-forward (DF), Gaussian relay channel",
author = "Zhengchuan Chen and Pingyi Fan and Dapeng Wu and Ke Xiong and Khaled Letaief",
year = "2014",
month = "2",
day = "9",
doi = "10.1109/GLOCOM.2014.7037490",
language = "English",
pages = "4342--4346",
booktitle = "2014 IEEE Global Communications Conference, GLOBECOM 2014",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - GEN

T1 - On the achievable rates of full-duplex Gaussian relay channel

AU - Chen, Zhengchuan

AU - Fan, Pingyi

AU - Wu, Dapeng

AU - Xiong, Ke

AU - Letaief, Khaled

PY - 2014/2/9

Y1 - 2014/2/9

N2 - In full-duplex Gaussian relay channels, neither Decode-and-Forward (DF) nor Compress-and-Forward (CF) can achieve a larger rate than the other for all the channel gain combinations. Combining DF and CF strategies, we show that a new achievable rate, which is the concave envelop of the maximal rate achieved by DF and CF with respect to the source power, is achievable. To this end, we actively adjust the transmission power of the source for different time and switch the transmission strategy between DF and CF according to the source power. It is proved that when the signal to noise ratio (SNR) of the source-destination link falls into a certain range, the new achievable rate is strictly larger than that achieved by pure DF and pure CF. The optimal power allocation and corresponding time proportions are also obtained. Numerical results show that the new achievable rate is also competitive with the rate achieved by superposing CF on DF. As strategy switching avoids complex codeword constructions, it is more practical than superposition structures to be implemented in relay systems.

AB - In full-duplex Gaussian relay channels, neither Decode-and-Forward (DF) nor Compress-and-Forward (CF) can achieve a larger rate than the other for all the channel gain combinations. Combining DF and CF strategies, we show that a new achievable rate, which is the concave envelop of the maximal rate achieved by DF and CF with respect to the source power, is achievable. To this end, we actively adjust the transmission power of the source for different time and switch the transmission strategy between DF and CF according to the source power. It is proved that when the signal to noise ratio (SNR) of the source-destination link falls into a certain range, the new achievable rate is strictly larger than that achieved by pure DF and pure CF. The optimal power allocation and corresponding time proportions are also obtained. Numerical results show that the new achievable rate is also competitive with the rate achieved by superposing CF on DF. As strategy switching avoids complex codeword constructions, it is more practical than superposition structures to be implemented in relay systems.

KW - Achievable rate

KW - Compress-forward (CF)

KW - Decode-forward (DF)

KW - Gaussian relay channel

UR - http://www.scopus.com/inward/record.url?scp=84949922465&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84949922465&partnerID=8YFLogxK

U2 - 10.1109/GLOCOM.2014.7037490

DO - 10.1109/GLOCOM.2014.7037490

M3 - Conference contribution

SP - 4342

EP - 4346

BT - 2014 IEEE Global Communications Conference, GLOBECOM 2014

PB - Institute of Electrical and Electronics Engineers Inc.

ER -