Space-time code design for correlated ricean MIMO channels at finite SNR

Bruno Clerckx; Claude Oestges

doi:10.1109/TSP.2008.921811

Space-time code design for correlated ricean MIMO channels at finite SNR

Bruno Clerckx, Claude Oestges

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Space-time code (STC) designs commonly rely on the assumptions of independent and identically distributed (i.i.d.) Rayleigh channels (being either slow or fast fading) and high signal-to-noise ratio (SNR). However, it has been shown that poor scattering conditions can have detrimental effects on the performance of STCs and that the behavior of codes at high SNR is radically different from the finite SNR behavior. This calls for new design criteria that correctly predict the behavior of codes in correlated channels at finite SNR. In this paper, we investigate how spatially and temporally correlated Ricean fading affects the performance of STCs at finite SNR. We derive a code design criterion leading to robust STCs in a wide variety of propagation conditions and do not require any channel knowledge at the transmitter. Codes satisfying this criterion are shown to perform sensibly better in correlated channels than codes designed only for i.i.d. slow or fast Rayleigh-fading channels. Examples of space-time trellis codes and algebraic codes are proposed in order to illustrate the developed criterion.

Original language	English
Pages (from-to)	4365-4376
Number of pages	12
Journal	IEEE Transactions on Signal Processing
Volume	56
Issue number	9
DOIs	https://doi.org/10.1109/TSP.2008.921811
Publication status	Published - 2008

Bibliographical note

Funding Information:
Manuscript received May 22, 2007; revised February 13, 2008. Published August 13, 2008 (projected). The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Geert Leus. The work of B. Clerckx and C. Oestges was supported by the Belgian Fund FRIA and the Belgian NSF, respectively.

Keywords

Correlated channels
Finite SNR
Multiple-input multiple-output (MIMO)
Space - Time coding

ASJC Scopus subject areas

Signal Processing
Electrical and Electronic Engineering

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10.1109/TSP.2008.921811

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title = "Space-time code design for correlated ricean MIMO channels at finite SNR",

abstract = "Space-time code (STC) designs commonly rely on the assumptions of independent and identically distributed (i.i.d.) Rayleigh channels (being either slow or fast fading) and high signal-to-noise ratio (SNR). However, it has been shown that poor scattering conditions can have detrimental effects on the performance of STCs and that the behavior of codes at high SNR is radically different from the finite SNR behavior. This calls for new design criteria that correctly predict the behavior of codes in correlated channels at finite SNR. In this paper, we investigate how spatially and temporally correlated Ricean fading affects the performance of STCs at finite SNR. We derive a code design criterion leading to robust STCs in a wide variety of propagation conditions and do not require any channel knowledge at the transmitter. Codes satisfying this criterion are shown to perform sensibly better in correlated channels than codes designed only for i.i.d. slow or fast Rayleigh-fading channels. Examples of space-time trellis codes and algebraic codes are proposed in order to illustrate the developed criterion.",

keywords = "Correlated channels, Finite SNR, Multiple-input multiple-output (MIMO), Space - Time coding",

author = "Bruno Clerckx and Claude Oestges",

note = "Funding Information: Manuscript received May 22, 2007; revised February 13, 2008. Published August 13, 2008 (projected). The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Geert Leus. The work of B. Clerckx and C. Oestges was supported by the Belgian Fund FRIA and the Belgian NSF, respectively.",

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AU - Oestges, Claude

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N2 - Space-time code (STC) designs commonly rely on the assumptions of independent and identically distributed (i.i.d.) Rayleigh channels (being either slow or fast fading) and high signal-to-noise ratio (SNR). However, it has been shown that poor scattering conditions can have detrimental effects on the performance of STCs and that the behavior of codes at high SNR is radically different from the finite SNR behavior. This calls for new design criteria that correctly predict the behavior of codes in correlated channels at finite SNR. In this paper, we investigate how spatially and temporally correlated Ricean fading affects the performance of STCs at finite SNR. We derive a code design criterion leading to robust STCs in a wide variety of propagation conditions and do not require any channel knowledge at the transmitter. Codes satisfying this criterion are shown to perform sensibly better in correlated channels than codes designed only for i.i.d. slow or fast Rayleigh-fading channels. Examples of space-time trellis codes and algebraic codes are proposed in order to illustrate the developed criterion.

AB - Space-time code (STC) designs commonly rely on the assumptions of independent and identically distributed (i.i.d.) Rayleigh channels (being either slow or fast fading) and high signal-to-noise ratio (SNR). However, it has been shown that poor scattering conditions can have detrimental effects on the performance of STCs and that the behavior of codes at high SNR is radically different from the finite SNR behavior. This calls for new design criteria that correctly predict the behavior of codes in correlated channels at finite SNR. In this paper, we investigate how spatially and temporally correlated Ricean fading affects the performance of STCs at finite SNR. We derive a code design criterion leading to robust STCs in a wide variety of propagation conditions and do not require any channel knowledge at the transmitter. Codes satisfying this criterion are shown to perform sensibly better in correlated channels than codes designed only for i.i.d. slow or fast Rayleigh-fading channels. Examples of space-time trellis codes and algebraic codes are proposed in order to illustrate the developed criterion.

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KW - Space - Time coding

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Space-time code design for correlated ricean MIMO channels at finite SNR

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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