Transmit Antenna Selection Schemes for Spatial Modulation Systems: Search Complexity Reduction and Large-Scale MIMO Applications

Sun, Zhenglong; Xiao, Yue; Yang, Ping; Li, Shaoqian; Wang, Xiang

doi:10.1109/tvt.2017.2696381

Cited by 54 publications

(28 citation statements)

References 41 publications

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“…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. To the best of our knowledge, the antenna subset selection problem in SM systems operating in the frequency selective channel has not been studied in the open literature.…”

Section: P Yang Et Almentioning

confidence: 99%

“…Step 2 is quite high, even when considering the latest lowcomplexity ED-TAS solutions of [28]. In order to reduce the computational burden involved in Step 2, it is important to develop insight into the set of antenna subsets A SIC .…”

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

confidence: 99%

“…In [27], Yang et al proposed an improved low-complexity implementation of ED-TAS by striking a beneficial performance vs. complexity trade-off. Recently, Sun et al [28] have proposed a reduced-dimensional ED-TASequivalent criterion, which results in the same performance as that of ED-TAS, albeit at a reduced complexity. In [29], Naresh et al have studied the ED based mirror activation pattern selection schemes in the context of RF-mirror aided spatial modulation systems.…”

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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Section: P Yang Et Almentioning

confidence: 99%

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

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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“…Although the equation (38) does not show a closed-form expression, we exploit the property of harmonic mean of two RV, H σ 2 = . Combined with (27) and after simplifying, we obtain…”

Section: Ergodic Capacitymentioning

confidence: 99%

Capacity Analysis of Index Modulations Over Spatial, Polarization, and Frequency Dimensions

Henarejos¹,

Pérez-Neira

2017

IEEE Trans. Commun.

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Abstract-Determining the capacity of a modulation scheme is a fundamental topic of interest. Index Modulations (IM), such as Spatial Modulation (SMod), Polarized Modulation (PMod) or Frequency Index Modulation (FMod), are widely studied in the literature. However, finding a closed-form analytical expression for their capacity still remains an open topic. In this paper, we formulate closed-form expressions for the instantaneous capacity of IM, together with its 2nd and 4th order approximations. We show that, in average, the 2nd approximation error tends to zero for low Signal to Noise Ratio (SNR) and is o (SNR). Also, a detailed analysis of the ergodic capacity over Rayleigh, Rice and Nakagami-m channel distributions is provided. As application of the capacity analysis, we leverage the proposed expressions to compute the ergodic capacities of SMod for different antenna configuration and correlations, PMod for different channel components and conditions, and FMod for different frequency separations. Although V-BLAST offers higher capacity, it requires high power budget. On the contrary, OSTBC exploits the full channel diversity at the expense of sacrificing multiplexing gain. Note also that OSTBC can only provide full diversity with 2 transmitting antennas. SMod strikes a balance between V-BLAST and OSTBC by increasing the channel capacity that OSTBC offers with less power requirements and is a trade-off between V-BLAST and OSTBC. In addition, it also provides more flexibility than OSTBC in the achievable rate that is obtained by increasing the number of transmitting antennas.SMod can be classified in to the general modulation strategy of Index Modulations (IM), term employed by [23], [30].

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“…al. [31] have proposed a reduced-dimensional EDAS-equivalent criterion, which results in the same performance as that of EDAS, albeit at a reduced complexity.…”

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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Transmit Antenna Selection Schemes for Spatial Modulation Systems: Search Complexity Reduction and Large-Scale MIMO Applications

Cited by 54 publications

References 41 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

Capacity Analysis of Index Modulations Over Spatial, Polarization, and Frequency Dimensions

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

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