UWB Impulse Radio with Triple-Polarization SIMO

Malik, W.Q.; Edwards, D.J.

doi:10.1109/glocom.2007.784

Cited by 8 publications

(4 citation statements)

References 10 publications

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“…For an indoor multipath UWB channel, this information will provide insight into the rate of decay of XPD for the received signal. Higher average XPD for specific MPCs can help improve the SNR when a vector (i.e., joint polarization and delay) selective-rake receiver is used [6]. The XPD decay rate assists in determining the integration time window for such a receiver.…”

Section: A Temporal Variabilitymentioning

confidence: 99%

Polarimetric Characterization of Ultrawideband Propagation Channels

Malik

2008

IEEE Trans. Antennas Propagat.

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The polarization characteristics of the indoor ultrawideband channel are investigated using dual-polar 3.1-10.6 GHz channel measurements. Under the generalized elliptical polarization framework, the channel cross-polar discrimination (XPD) statistics are evaluated. Lognormal and triangular distributions are shown to well model the XPD and ellipticity angle. Considerable spectral and small-scale spatial variability is observed in the XPD. Asymptotic convergence of XPD to its mean with increasing bandwidth is established. An analysis of the variation of tap XPD with excess delay indicates that the XPD is highest for the initial paths. It is shown that increased scattering leads to greater depolarization. The dependence of XPD on the channel's rms delay spread is modelled using a linear regression with 0.5 dB/ns slope. This characterization will aid the analysis of polarization-dependent loss and the design of polarized multiple-antenna systems.

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Section: A Temporal Variabilitymentioning

confidence: 99%

Polarimetric Characterization of Ultrawideband Propagation Channels

Malik

2008

IEEE Trans. Antennas Propagat.

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“…Until now, only some correlation properties of UWB-MIMO channels have been investigated; see [10,152,247]. In [65,114,152,155,156], the effect of antenna angular orientation and signal polarization on the system performance, which are mainly used to decrease the correlation of spatial channels, is investigated.…”

Section: Uwb-mimo Channel Measurement and Modelsmentioning

confidence: 99%

Ultra Wideband Systems with MIMO

Kaiser¹,

Zheng²

2010

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“…Gaurav Gupta et al [13] have shown that the use of triply polarized antennas can achieve thrice the capacity than that of the uni-polarized antennas. Experimental studies reported in [14] have shown that triply polarized antenna array can increase considerably antenna diversity resulting in improved link performance in an indoor environment. Furthermore, in [15], it has been shown that triply polarized antenna aided ultra-wideband system can achieve better spectral efficiency.…”

Section: Introductionmentioning

confidence: 99%

Performance of Cooperative Multi-Cell Downlink Communication Aided by Polarization-Multiplexing Under Limited Feedback Constraints

Nagaradjane

Tamilarasi

2016

IEEE Access

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In this correspondence, we investigate the performance of a multi-cell multiple-input multiple-output downlink (DL) system aided by base station (BS) cooperation, relay cooperation, and polarization-multiplexing (PM). Triply-polarized antennas that are employed at the BSs, relays, and mobile stations (MSs) to conceive PM serve as an replacement for multiple uni-polarized antennas that inflict space limitation. In a multi-user multi-cell relay-aided scenario, MSs and relays conflict multi-user interference (MUI) as well as inter-cell or co-channel interference (CCI). Furthermore, the MSs experience intra-relay interference and inter-relay interference. In this paper, both the MUI and CCI at the relays are completely removed by the combined preprocessing operated at the BS. Similarly, the intra-relay and inter-relay interference are eliminated with the aid of the joint preprocessing operated at the relays. Specifically, in this contribution, the performance of the considered system is investigated when the channel state information (CSI) required at the BSs to implement the joint preprocessing suffers from feedback and back-haul delays. In our contribution, feedback channels that convey the CSI to the BSs endure noise and fading as well. Our simulation study demonstrates that the use of triply polarized antennas in combination with joint preprocessing at the BSs and relays can be regarded as an efficient technique for the cooperative multi-cell DL system to deal with the space constraints and the aforementioned interferences. Furthermore, the considered preprocessing results in superior symbol-error-rate performance compared with other preprocessing approaches.

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UWB Impulse Radio with Triple-Polarization SIMO

Cited by 8 publications

References 10 publications

Polarimetric Characterization of Ultrawideband Propagation Channels

Polarimetric Characterization of Ultrawideband Propagation Channels

Ultra Wideband Systems with MIMO

Performance of Cooperative Multi-Cell Downlink Communication Aided by Polarization-Multiplexing Under Limited Feedback Constraints

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