Information Outage Probability of Distributed STBCs Over Nakagami Fading Channels

Dohler, Mischa; Aghvami, Hamid

doi:10.1109/lcomm.2004.832740

Cited by 51 publications

(42 citation statements)

References 9 publications

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“…When the coherence time of the channel significantly exceeds the symbol duration (i.e., long bursts of errors during outage events), the two are close and (37) can serve as an estimate of the SER as well. Table I compares Pe(M ) in (37) using the exact F(x) in (6) and the SER of 8-PSK and 16-QAM with Alamouti scheme in the 2 2 2 uncorrelated keyhole channel given in [13]. As expected, (37) indeed upper-bounds the SER and is of the same order of magnitude.…”

Section: Outage Capacity and Symbol Error Ratesupporting

confidence: 59%

On the Outage Capacity Distribution of Correlated Keyhole MIMO Channels

Levin

Loyka

2008

IEEE Trans. Inform. Theory

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Abstract-Keyhole multiple-input-multiple-output (MIMO) channels have recently received significant attention since they can model, to a certain extend, some practically important propagation scenarios and also relay channels in the amplify-and-forward mode. This paper investigates instantaneous signal-to-noise ratio (SNR) and outage capacity distributions of spatially correlated keyhole MIMO channels with perfect channel state information (CSI) at the receive end and with or without CSI at the transmit end. For a small number of antennas, the impact of correlation on the capacity distribution can be characterized by the effective average SNR. This SNR, as well as the outage capacity, decreases with correlation. For a large number of transmit (receive) antennas, the keyhole channel is asymptotically equivalent (in terms of capacity) to the Rayleigh diversity channel with a single transmit (receive) antenna and multiple receive (transmit) antennas. The outage capacity of the keyhole channel is upper-bounded by that of the equivalent Rayleigh diversity channel. When the number of both transmit and receive antennas is large, the outage capacity distribution of the keyhole channel is asymptotically Gaussian. In some cases, the asymptotic Gaussian approximation is accurate already for a reasonably small number of antennas. The perfect transmit CSI is shown to bring a fixed SNR gain. A more general channel model with multiple keyholes is proposed. For a large number of antennas, the capacity of a multikeyhole channel is a normally distributed sum of the capacities of single keyhole channels. The fact that, despite the strong degenerate nature of the keyhole channel, its outage capacity distribution is asymptotically normal indicates that Gaussian distribution has a high degree of universality for the capacity analysis of MIMO channels.

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Section: Outage Capacity and Symbol Error Ratesupporting

confidence: 59%

On the Outage Capacity Distribution of Correlated Keyhole MIMO Channels

Levin

Loyka

2008

IEEE Trans. Inform. Theory

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“…|a k,M | = 1/M , R t = R tk and R r = R rk ∀k, and assume that they are non-singular. Clearly, (9) holds in this case, and under the normalization (4), C = R T t ⊗ R r is non-singular and does not depend on M . Therefore from Theorem 2(i), such a multi-keyhole channel converges in distribution to a Rayleigh-fading one as M → ∞.…”

Section: Corollary 22mentioning

confidence: 94%

“…The outage capacity of spatially independent as well as correlated Rayleigh, Rice and Nakagami MIMO channels has been extensively studied, and a number of analytical and empirical results have been obtained [1]- [9]. There are, however, propagation environments that result in substantially different channels.…”

Section: Introductionmentioning

confidence: 99%

From Multi-Keyholes to Measure of Correlation and Power Imbalance in MIMO Channels: Outage Capacity Analysis

Levin

Loyka

2011

IEEE Trans. Inform. Theory

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Abstract-An information-theoretic analysis of a multi-keyhole channel, which includes a number of statistically independent keyholes with possibly different correlation matrices, is given. When the number of keyholes or/and the number of Tx/Rx antennas is large, there is an equivalent Rayleigh-fading channel such that the outage capacities of both channels are asymptotically equal. In the case of a large number of antennas and for a broad class of fading distributions, the instantaneous capacity is shown to be asymptotically Gaussian in distribution, and compact, closed-form expressions for the mean and variance are given. Motivated by the asymptotic analysis, a simple, full-ordering scalar measure of spatial correlation and power imbalance in MIMO channels is introduced, which quantifies the negative impact of these two factors on the outage capacity in a simple and well-tractable way. It does not require the eigenvalue decomposition, and has the full-ordering property. The size-asymptotic results are used to prove Telatar's conjecture for semi-correlated multi-keyhole and Rayleigh channels. Since the keyhole channel model approximates well the relay channel in the amplify-and-forward mode in certain scenarios, these results also apply to the latter.Index Terms-MIMO channel, keyhole, outage capacity, asymptotic analysis, measure of correlation and power imbalance, relay channel.

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“…simultaneously be satisfied, the DRX i , which can reach the detection threshold ,1 h T  , must be verified to ensure the false alarm probability at DRX i is not higher than the pre-defined σ σ ≈ , the detection threshold is set according to (4) and (6). From reference [21], we consider the path loss and shadowing model, i.e., , 0 10 lg 10 lg , 1, 2…”

Section: B Timing Acquisitionmentioning

confidence: 99%

“…However, the potential advantages of using multiple antennas cannot realize for centralized antenna systems (CAS) due to the co-located placement of antennas [1] [2]. Relative to the CAS, the distributed antenna systems (DAS) presents many advantages, e.g., expanding coverage and increasing sum rates by having distributed antenna ports throughout a cell [2]- [4]. As the key technology of the next generation wireless system, the DAS has been attracting worldwide research interests [5] [6].…”

Section: Introductionmentioning

confidence: 99%

Timing Acquisition with Cooperation of Two Distributed Receive Antennas over Flat-Fading Channels

Qing¹,

Wei²,

Xia³

et al. 2013

Proceedings of the 2nd International Symposium on Computer, Communication, Control and Automation

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Abstract-In the flat Rayleigh channels of linear cell, two distributed receive antennas are employed to receive the signal transmitted from the mobile station (MS) with a single antenna. We exploit the false alarm probability at the central processor to guarantee that the false alarm probability at each distributed antenna does not exceed the pre-defined probability of false alarm. Based on the exploited probability of false alarm at the central processor, a cooperative detection threshold of each antenna is derived for threshold detection. According to the threshold detection, a maximum-likelihood (ML)-based timing acquisition method is proposed for distributed antenna systems (DAS). Without increasing the pre-defined probability of false alarm, the analysis and simulation results show that the correct acquisition probability and the missed detection probability for each distributed antenna can be improved with the proposed method wherever the MS is located.

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Information Outage Probability of Distributed STBCs Over Nakagami Fading Channels

Cited by 51 publications

References 9 publications

On the Outage Capacity Distribution of Correlated Keyhole MIMO Channels

On the Outage Capacity Distribution of Correlated Keyhole MIMO Channels

From Multi-Keyholes to Measure of Correlation and Power Imbalance in MIMO Channels: Outage Capacity Analysis

Timing Acquisition with Cooperation of Two Distributed Receive Antennas over Flat-Fading Channels

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