Diversity and spatial multiplexing of MIMO amplitude detection receivers

Psaltopoulos, Georgios K.; Wittneben, A.

doi:10.1109/pimrc.2009.5449784

Cited by 14 publications

(13 citation statements)

References 5 publications

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“…Retaining only the significant terms of the summation over j in (24) under the conditions ( 23), (25), and ( 27), we get…”

Section: Approximation For High Snrmentioning

confidence: 99%

“…One reason for this is that without any CSI, it is impossible to separate out the MIMO channels [19], [20], [21]. Therefore, previous work has focused on energy detection MIMO when partial channel knowledge is available [22], for which fundamental limits on system per-formance including capacity and diversity have been obtained [23], [24]. These reveal that capacity and diversity order are approximately halved compared to coherent MIMO systems.…”

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confidence: 99%

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Channel Capacity of an Asymmetric Constellation in Rayleigh Fading With Noncoherent Energy Detection

Mallik

Murch

2021

IEEE Trans. Wireless Commun.

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The channel capacity of noncoherent reception of multi-level one-sided amplitude-shift keying (ASK), which is an asymmetric constellation, in Rayleigh fading with receive diversity and energy detection is considered. The asymmetries result in capacity achieving input probability distributions, that is, a priori probability distributions, that deviate from uniformity. An analytical expression for the mutual information in terms of a single integral is derived, and from it the set of equations, which can be solved to obtain the optimum or capacity achieving input probabilities, is obtained. High and low signal-to-noise ratio (SNR) approximations of the optimum input probabilities and the capacity are derived next. Furthermore, a logarithmic upper bound on the mutual information is obtained. Numerical results confirm that the uniform distribution of input probabilities is not capacity achieving. For example, with average SNR per symbol per branch of 6 dB, the relative deviation of the mutual information (with uniform input distribution) from the capacity is nearly 20% for 4-level ASK with one transmit diversity branch and two receive diversity branches. Furthermore, the derived high and low SNR approximations to the capacity are shown to be reasonably accurate.

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“…Retaining only the significant terms of the summation over j in (24) under the conditions ( 23), (25), and ( 27), we get…”

Section: Approximation For High Snrmentioning

confidence: 99%

mentioning

confidence: 99%

Channel Capacity of an Asymmetric Constellation in Rayleigh Fading With Noncoherent Energy Detection

Mallik

Murch

2021

IEEE Trans. Wireless Commun.

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“…To meet these demands of low power consumption, low computational complexity, and higher rate, a new family of nonlinear MIMO systems is developed. The nonlinear MIMO/OOK scheme was first proposed in 2010 . Specifically, this system combines the high‐rate of the MIMO system with the nonlinear OOK modulation.…”

Section: Introductionmentioning

confidence: 99%

“…The 948 M.-J. HAO AND Y.-C. TSAI nonlinear MIMO/OOK scheme was first proposed in 2010 [9][10][11][12][13]. Specifically, this system combines the high-rate of the MIMO system with the nonlinear OOK modulation.…”

Section: Introductionmentioning

confidence: 99%

“…For the development of the nonlinear MIMO system, the information‐theoretic limits were studied in . The achievable diversity and modulation with spatial multiplexing for MIMO systems with envelope detectors were studied in with the assumption that the receiver possesses perfect channel state information (CSI). A practical channel estimation scheme for such nonlinear MIMO systems was presented in , where the estimation problem was decomposed into several scalar estimations, and various scalar estimation schemes were studied.…”

Section: Introductionmentioning

confidence: 99%

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Channel estimation for nonlinear MIMO receiver with square envelope detection

Hao

Tsai

2011

Int J Communication

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SUMMARYTwo practical channel estimation schemes, the moment‐based first‐and‐second moments and the simplified maximum likelihood estimators, are proposed for the MIMO/on–off keying system with square envelope detection applied for wireless sensor networks. Here, both the channel response and noise power are estimated simultaneously in comparison with other approaches in which the noise quantity is assumed to be known at the receiver. Hence, the developed estimators are more practical than those estimators without noise power estimation. Simulation results reveal that the system with both proposed schemes can achieve an excellent BER performance in a wide signal‐to‐noise ratio (SNR) range. More specifically, we observed that the simplified maximum likelihood estimator performed as well as the moment‐based first‐and‐second moments estimator for SNR greater than 7.5 dB, yet had much more decline at low SNRs. This study also investigated the effects of the numbers of receive antennas and transmit antennas on the system performance. Simulation results demonstrated that, at the BER of 10−3, the 5 × 5 system had an improvement of 7 dB in SNR compared with the 3 × 3 system. Copyright © 2011 John Wiley & Sons, Ltd.

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Channel Estimation for Very Low Power MIMO Envelope Detectors

Psaltopoulos

Wittneben

2010

2010 IEEE International Conference on Communications

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Diversity and spatial multiplexing of MIMO amplitude detection receivers

Cited by 14 publications

References 5 publications

Channel Capacity of an Asymmetric Constellation in Rayleigh Fading With Noncoherent Energy Detection

Channel Capacity of an Asymmetric Constellation in Rayleigh Fading With Noncoherent Energy Detection

Channel estimation for nonlinear MIMO receiver with square envelope detection

Channel Estimation for Very Low Power MIMO Envelope Detectors

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