Quantifying the Transmit Diversity Order of Euclidean Distance Based Antenna Selection in Spatial Modulation

Rajashekar, Rakshith; Hari, K.V.S.; Hanzo, Lajos

doi:10.1109/lsp.2015.2408574

Cited by 59 publications

(45 citation statements)

References 19 publications

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“…Proof: The proof directly follows from Proposition 3 [6] and Proposition 2 [25]. The ED-TAS [25] based TA subset is given by…”

Section: A Proposed Partial-sic Aided Tas (Sic-tas) Algorithmmentioning

confidence: 96%

“…1) Owing to the high transmit diversity order attainable by ED-TAS [25], it has attracted significant research interests in the recent past. However, all the existing antenna subset selection schemes [21]- [28], including the ED-TAS have only been studied under flat-fading channel conditions, which do not reflect the realistic channel conditions, where the channel is frequency selective.…”

Section: P Yang Et Almentioning

confidence: 99%

“…Furthermore, low-complexity antenna selection algorithms were proposed in [23], [24]. The transmit diversity order of ED-TAS was quantified in [25], while Sun et al [26] proposed a cross-entropy based method for reducing the search complexity of ED-TAS. In [27], Yang et al proposed an improved low-complexity implementation of ED-TAS by striking a beneficial performance vs. complexity trade-off.…”

Section: Introductionmentioning

confidence: 99%

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Transmit Antenna Subset Selection for Single and Multiuser Spatial Modulation Systems Operating in Frequency Selective Channels

Rajashekar

Hari

Hanzo

2018

IEEE Trans. Veh. Technol.

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Abstract-The extensive study of transmit antenna (TA) subset selection (TAS) in the context of spatial modulation (SM) has recently revealed that significant performance gains are attainable compared to SM systems operating without TAS. However, the existing TAS techniques conceived for SM were studied by considering a frequency-flat channel, which does not represent practical frequency-selective channels. In this paper, we address this open problem by designing TAS schemes for zero-padded single-carrier SM systems. Specifically, we employ a partial successive interference cancellation (SIC) receiver and invoke Euclidean distance based transmit antenna subset selection (ED-TAS) for each of the sub-channels. Furthermore, we show using theoretical analysis that the parallel sub-channels obtained are nearly identical, which enables us to employ majority logic decision to obtain a single TA subset to be used in all the subchannels. The computational burden is additionally reduced by restricting the number of sub-channels over which the ED-TAS technique is invoked. Furthermore, the proposed TAS schemes are extended to the multi-user scenario. The theoretical insights developed are validated using simulation results. Specifically, a signal-to-noise ratio (SNR) gain as high as 3dB is observed in the single user scenario and about 1dB in case of a two-user scenario upon employing our TAS.

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“…Proof: The proof directly follows from Proposition 3 [6] and Proposition 2 [25]. The ED-TAS [25] based TA subset is given by…”

Section: A Proposed Partial-sic Aided Tas (Sic-tas) Algorithmmentioning

confidence: 96%

Section: P Yang Et Almentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Transmit Antenna Subset Selection for Single and Multiuser Spatial Modulation Systems Operating in Frequency Selective Channels

Rajashekar

Hari

Hanzo

2018

IEEE Trans. Veh. Technol.

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“…. , X n } is a collection of TCBs, f(·) can be any metric of interest such as the capacity [25], the minimum Euclidean distance [28] etc. Upon obtaining X = X i * from (4), the receiver feeds the codebook index i * back to the transmitter, and uses the receive processing matrix Z = Z j * for its subsequent reception.…”

Section: A System Modelmentioning

confidence: 99%

“…Furthermore, low-complexity antenna selection algorithms were proposed in [26], [27]. The transmit diversity order of EDAS was quantified in [28], while Sun et. al.…”

Section: Introductionmentioning

confidence: 99%

A Generalized Transmit and Receive Diversity Condition for Feedback-Assisted MIMO Systems: Theory and Applications in Full-Duplex Spatial Modulation

Rajashekar¹,

Renzo²,

Hari³

et al. 2017

IEEE Trans. Signal Process.

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Abstract-It is widely exploited that the feedback assisted multiple-input multiple-output (MIMO) systems, which rely on channel state information (CSI) at the transmitter not only improve the spectral efficiency but also increase the attainable diversity gains. Owing to the limited bandwidth of the feedback channel, it is impractical to feed back perfect CSI or the transmit precoding (TPC) matrix to be used by the transmitter. This issue has been studied for over a decade now and it is addressed by feeding the TPC codeword index back to the transmitter. In this paper, we derive the conditions to be satisfied by the transmit and receive codebooks (TCBs and RCBs) for achieving full transmit and receive diversity gains. Furthermore, based on the conditions derived, we propose several RCBs by exploiting the properties of circulant matrices constructed with the aid of Cyclotomic polynomials. The proposed RCBs are shown to offer several benefits when employed in full-duplex (FD) spatial modulation (SM) systems, which include i) reduced hardware complexity of the self-interference (SI) cancellation circuitry ii) robustness to SI iii) maintain the diversity gain in the face of strong line-of-sight (LoS) channels. Furthermore, we study the performance of the proposed RCBs in an emerging drone communication scenario where several drones act as FD relays. Our simulation results show that the proposed RCBs indeed do attain the diversity gains predicted by our theoretical results. Specifically, in a dual-hop FD SM relay system the proposed receiver combiner selection (RCS) codebook is observed to give about 3dB signal-to-noise (SNR) gain compared to the receive antenna selection (RAS) codebook without any substantial extra requirements. In the case of a triple-hop FD drone network, an SNR gain of about 2.5dB is observed for our RCS codebook over a RAS codebook.Index Terms-Joint transmit and receive processing, diversity gain, antenna selection, full-duplex, drones.R. Rajashekar and L. Hanzo are with the

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2018

Space Modulation Techniques

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Quantifying the Transmit Diversity Order of Euclidean Distance Based Antenna Selection in Spatial Modulation

Cited by 59 publications

References 19 publications

Transmit Antenna Subset Selection for Single and Multiuser Spatial Modulation Systems Operating in Frequency Selective Channels

Transmit Antenna Subset Selection for Single and Multiuser Spatial Modulation Systems Operating in Frequency Selective Channels

A Generalized Transmit and Receive Diversity Condition for Feedback-Assisted MIMO Systems: Theory and Applications in Full-Duplex Spatial Modulation

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