Abstract

Switch and stay diversity combining offers a substantial complexity reduction at the cost of modest performance degradation compared to systems implementing selection diversity. In this work, the design and performance of space time coded multiple input multiple output (MIMO) systems employing switch and stay combining at the receiver, with two antennas, is considered. Assuming known channel at the receiver, a novel switching algorithm is proposed and an upper bound on the pairwise error probability (PEP) is derived. Based on this upper bound, the optimal switching threshold is derived and it is shown that full diversity is achieved when the optimal switching threshold is used. For the case when the channel has to be estimated at the receiver, a minimal complexity training scheme suitable for both switching and channel estimation is described, where it is shown that full diversity is still achievable. By comparing the PEP expressions for the system with perfect channel knowledge at the receiver against the system with imperfect channel knowledge, the power distribution between the training and the data space-time (ST) codewords is optimized to minimize the loss suffered due to channel estimation. Simulation results have also been included to corroborate our results.

Original languageEnglish (US)
Article number5351731
Pages (from-to)6134-6142
Number of pages9
JournalIEEE Transactions on Wireless Communications
Volume8
Issue number12
DOIs
StatePublished - Dec 2009

Fingerprint

Switch
Receiver
Coding
Space-time
Switches
Channel Estimation
Error Probability
Channel estimation
Pairwise
Upper bound
Multiple-input multiple-output (MIMO) Systems
Power Distribution
Imperfect
Antenna
Degradation
Antennas
Minimise
Simulation
Training
Knowledge

Keywords

  • Channel estimation error (CEE)
  • Diversity
  • Multiple-inputmultiple-output (MIMO)
  • Pairwise error probability (PEP)
  • Space-time codes (ST)
  • Switch and stay combining
  • Switching rate

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Applied Mathematics

Cite this

Space-time coding for receive switch and stay combining. / Narasimhamurthy, Adarsh B.; Tepedelenlioglu, Cihan.

In: IEEE Transactions on Wireless Communications, Vol. 8, No. 12, 5351731, 12.2009, p. 6134-6142.

Research output: Contribution to journalArticle

@article{13574038282a4c58a0103fd3c205109d,
title = "Space-time coding for receive switch and stay combining",
abstract = "Switch and stay diversity combining offers a substantial complexity reduction at the cost of modest performance degradation compared to systems implementing selection diversity. In this work, the design and performance of space time coded multiple input multiple output (MIMO) systems employing switch and stay combining at the receiver, with two antennas, is considered. Assuming known channel at the receiver, a novel switching algorithm is proposed and an upper bound on the pairwise error probability (PEP) is derived. Based on this upper bound, the optimal switching threshold is derived and it is shown that full diversity is achieved when the optimal switching threshold is used. For the case when the channel has to be estimated at the receiver, a minimal complexity training scheme suitable for both switching and channel estimation is described, where it is shown that full diversity is still achievable. By comparing the PEP expressions for the system with perfect channel knowledge at the receiver against the system with imperfect channel knowledge, the power distribution between the training and the data space-time (ST) codewords is optimized to minimize the loss suffered due to channel estimation. Simulation results have also been included to corroborate our results.",
keywords = "Channel estimation error (CEE), Diversity, Multiple-inputmultiple-output (MIMO), Pairwise error probability (PEP), Space-time codes (ST), Switch and stay combining, Switching rate",
author = "Narasimhamurthy, {Adarsh B.} and Cihan Tepedelenlioglu",
year = "2009",
month = "12",
doi = "10.1109/TWC.2009.12.090826",
language = "English (US)",
volume = "8",
pages = "6134--6142",
journal = "IEEE Transactions on Wireless Communications",
issn = "1536-1276",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "12",

}

TY - JOUR

T1 - Space-time coding for receive switch and stay combining

AU - Narasimhamurthy, Adarsh B.

AU - Tepedelenlioglu, Cihan

PY - 2009/12

Y1 - 2009/12

N2 - Switch and stay diversity combining offers a substantial complexity reduction at the cost of modest performance degradation compared to systems implementing selection diversity. In this work, the design and performance of space time coded multiple input multiple output (MIMO) systems employing switch and stay combining at the receiver, with two antennas, is considered. Assuming known channel at the receiver, a novel switching algorithm is proposed and an upper bound on the pairwise error probability (PEP) is derived. Based on this upper bound, the optimal switching threshold is derived and it is shown that full diversity is achieved when the optimal switching threshold is used. For the case when the channel has to be estimated at the receiver, a minimal complexity training scheme suitable for both switching and channel estimation is described, where it is shown that full diversity is still achievable. By comparing the PEP expressions for the system with perfect channel knowledge at the receiver against the system with imperfect channel knowledge, the power distribution between the training and the data space-time (ST) codewords is optimized to minimize the loss suffered due to channel estimation. Simulation results have also been included to corroborate our results.

AB - Switch and stay diversity combining offers a substantial complexity reduction at the cost of modest performance degradation compared to systems implementing selection diversity. In this work, the design and performance of space time coded multiple input multiple output (MIMO) systems employing switch and stay combining at the receiver, with two antennas, is considered. Assuming known channel at the receiver, a novel switching algorithm is proposed and an upper bound on the pairwise error probability (PEP) is derived. Based on this upper bound, the optimal switching threshold is derived and it is shown that full diversity is achieved when the optimal switching threshold is used. For the case when the channel has to be estimated at the receiver, a minimal complexity training scheme suitable for both switching and channel estimation is described, where it is shown that full diversity is still achievable. By comparing the PEP expressions for the system with perfect channel knowledge at the receiver against the system with imperfect channel knowledge, the power distribution between the training and the data space-time (ST) codewords is optimized to minimize the loss suffered due to channel estimation. Simulation results have also been included to corroborate our results.

KW - Channel estimation error (CEE)

KW - Diversity

KW - Multiple-inputmultiple-output (MIMO)

KW - Pairwise error probability (PEP)

KW - Space-time codes (ST)

KW - Switch and stay combining

KW - Switching rate

UR - http://www.scopus.com/inward/record.url?scp=73049088658&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=73049088658&partnerID=8YFLogxK

U2 - 10.1109/TWC.2009.12.090826

DO - 10.1109/TWC.2009.12.090826

M3 - Article

AN - SCOPUS:73049088658

VL - 8

SP - 6134

EP - 6142

JO - IEEE Transactions on Wireless Communications

JF - IEEE Transactions on Wireless Communications

SN - 1536-1276

IS - 12

M1 - 5351731

ER -