Blind interference alignment with diversity in K-User interference channels

Yi Lu, Wei Zhang, Khaled Letaief

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

In this paper, we propose blind interference alignment (BIA) schemes using reconfigurable antenna technology to achieve high degree of freedom (DoF) or diversity gain in K-user interference channels. First, two DoF-oriented BIA schemes are proposed that fully and partially align the inter-user interference, respectively. We compare the achievable DoF of the two schemes and show that the partial BIA scheme has higher DoF than the full BIA scheme under some conditions, and vice versa. Then, three diversity-oriented BIA schemes with space-time coding are proposed to achieve both spatial diversity gain and reconfigurable antenna pattern diversity gain. With different tradeoffs among the diversity gain, the rate and the decoding complexity, the BIA with threaded algebraic space-time (TAST) codes, the BIA with orthogonal space-time block codes (OSTBCs), and the BIA with multiplexing Alamouti codes are proposed, respectively. The BIA with TAST codes can achieve the full diversity and high rate with high decoding complexity. The BIA with OSTBCs can achieve the full diversity and the linear decoding complexity but has low rate. The BIA with multiplexing Alamouti codes can achieve high rate with low decoding complexity at the expense of full diversity loss.

Original languageEnglish
Article number6844854
Pages (from-to)2850-2859
Number of pages10
JournalIEEE Transactions on Communications
Volume62
Issue number8
DOIs
Publication statusPublished - 2014
Externally publishedYes

Fingerprint

Decoding
Space time codes
Block codes
Multiplexing
Directional patterns (antenna)
Antennas

Keywords

  • blind interference alignment
  • degree of freedom
  • diversity
  • Interference channels
  • space-time codes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Blind interference alignment with diversity in K-User interference channels. / Lu, Yi; Zhang, Wei; Letaief, Khaled.

In: IEEE Transactions on Communications, Vol. 62, No. 8, 6844854, 2014, p. 2850-2859.

Research output: Contribution to journalArticle

@article{fcb8cd442e6c47db8daffb3b396d9a6a,
title = "Blind interference alignment with diversity in K-User interference channels",
abstract = "In this paper, we propose blind interference alignment (BIA) schemes using reconfigurable antenna technology to achieve high degree of freedom (DoF) or diversity gain in K-user interference channels. First, two DoF-oriented BIA schemes are proposed that fully and partially align the inter-user interference, respectively. We compare the achievable DoF of the two schemes and show that the partial BIA scheme has higher DoF than the full BIA scheme under some conditions, and vice versa. Then, three diversity-oriented BIA schemes with space-time coding are proposed to achieve both spatial diversity gain and reconfigurable antenna pattern diversity gain. With different tradeoffs among the diversity gain, the rate and the decoding complexity, the BIA with threaded algebraic space-time (TAST) codes, the BIA with orthogonal space-time block codes (OSTBCs), and the BIA with multiplexing Alamouti codes are proposed, respectively. The BIA with TAST codes can achieve the full diversity and high rate with high decoding complexity. The BIA with OSTBCs can achieve the full diversity and the linear decoding complexity but has low rate. The BIA with multiplexing Alamouti codes can achieve high rate with low decoding complexity at the expense of full diversity loss.",
keywords = "blind interference alignment, degree of freedom, diversity, Interference channels, space-time codes",
author = "Yi Lu and Wei Zhang and Khaled Letaief",
year = "2014",
doi = "10.1109/TCOMM.2014.2333516",
language = "English",
volume = "62",
pages = "2850--2859",
journal = "IEEE Transactions on Communications",
issn = "0096-1965",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "8",

}

TY - JOUR

T1 - Blind interference alignment with diversity in K-User interference channels

AU - Lu, Yi

AU - Zhang, Wei

AU - Letaief, Khaled

PY - 2014

Y1 - 2014

N2 - In this paper, we propose blind interference alignment (BIA) schemes using reconfigurable antenna technology to achieve high degree of freedom (DoF) or diversity gain in K-user interference channels. First, two DoF-oriented BIA schemes are proposed that fully and partially align the inter-user interference, respectively. We compare the achievable DoF of the two schemes and show that the partial BIA scheme has higher DoF than the full BIA scheme under some conditions, and vice versa. Then, three diversity-oriented BIA schemes with space-time coding are proposed to achieve both spatial diversity gain and reconfigurable antenna pattern diversity gain. With different tradeoffs among the diversity gain, the rate and the decoding complexity, the BIA with threaded algebraic space-time (TAST) codes, the BIA with orthogonal space-time block codes (OSTBCs), and the BIA with multiplexing Alamouti codes are proposed, respectively. The BIA with TAST codes can achieve the full diversity and high rate with high decoding complexity. The BIA with OSTBCs can achieve the full diversity and the linear decoding complexity but has low rate. The BIA with multiplexing Alamouti codes can achieve high rate with low decoding complexity at the expense of full diversity loss.

AB - In this paper, we propose blind interference alignment (BIA) schemes using reconfigurable antenna technology to achieve high degree of freedom (DoF) or diversity gain in K-user interference channels. First, two DoF-oriented BIA schemes are proposed that fully and partially align the inter-user interference, respectively. We compare the achievable DoF of the two schemes and show that the partial BIA scheme has higher DoF than the full BIA scheme under some conditions, and vice versa. Then, three diversity-oriented BIA schemes with space-time coding are proposed to achieve both spatial diversity gain and reconfigurable antenna pattern diversity gain. With different tradeoffs among the diversity gain, the rate and the decoding complexity, the BIA with threaded algebraic space-time (TAST) codes, the BIA with orthogonal space-time block codes (OSTBCs), and the BIA with multiplexing Alamouti codes are proposed, respectively. The BIA with TAST codes can achieve the full diversity and high rate with high decoding complexity. The BIA with OSTBCs can achieve the full diversity and the linear decoding complexity but has low rate. The BIA with multiplexing Alamouti codes can achieve high rate with low decoding complexity at the expense of full diversity loss.

KW - blind interference alignment

KW - degree of freedom

KW - diversity

KW - Interference channels

KW - space-time codes

UR - http://www.scopus.com/inward/record.url?scp=84906559151&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84906559151&partnerID=8YFLogxK

U2 - 10.1109/TCOMM.2014.2333516

DO - 10.1109/TCOMM.2014.2333516

M3 - Article

VL - 62

SP - 2850

EP - 2859

JO - IEEE Transactions on Communications

JF - IEEE Transactions on Communications

SN - 0096-1965

IS - 8

M1 - 6844854

ER -