Proceedings ArticleDOI
A practical method for wireless channel reciprocity exploitation through relative calibration
Maxime Guillaud,Dirk Slock,Raymond Knopp +2 more
- Vol. 1, pp 403-406
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TLDR
Experimental results confirm the validity of the proposed linear reciprocity model, and of the calibration approach, which lets the transmitter acquire knowledge of the downlink channel state from the uplink channel estimates, through proper modeling and estimation of the RF circuitry impulse responses.Abstract:
We present a relative calibration method for a wireless TDD link, which, after a calibration phase involving feedback, lets the transmitter acquire knowledge of the downlink channel state from the uplink channel estimates, through proper modeling and estimation of the RF circuitry impulse responses. Contrarily to previous methods, relative calibration does not require specific calibration hardware. Experimental results confirm the validity of the proposed linear reciprocity model, and of the calibration approach.read more
Citations
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Proceedings ArticleDOI
A Self-Calibration Scheme for TDD Massive MIMO with Imperfect Channel Estimation
TL;DR: This work proposes a novel self calibration scheme for the maximum ratio transmission in TDD multi-user massive MIMO systems to compensate for the imperfect channel reciprocity, with considerations of imperfect channel estimation.
Proceedings ArticleDOI
Frugal calibration of mutual coupling in large scale antenna array
TL;DR: This work proposes to estimate the gain mismatches of the RF electronics and the mutual coupling mismatches separately, and relies on the pilot exchanges among the BS antennas and the symmetry of the antenna array to recover the transmit and receive gains of all the RF components.
Proceedings ArticleDOI
Adaptive Channel Quantization on TDD Reciprocity Performance of Relative Antenna Calibration
TL;DR: An adaptive quantization method for downlink channel state information is proposed, which selects the number of feedback bits based on the estimation quality of the instantaneous uplink channel.
Analysis and Mitigation of Channel Non-Reciprocity in TDD MIMO Systems
TL;DR: This thesis focuses on the channel non-reciprocity problem in TDD MIMO systems due to mismatches in Frequency Response (FR) and mutual coupling of transmitting and receiving chains of transceivers and associated antenna systems and suggests an Over-The-Air (OTA) pilot-based algorithm is proposed to efficiently mitigate the BS transceiver non- Recursion.
Proceedings ArticleDOI
Using of Wavelets for Secret Key Generation: A Measurement Based Study
TL;DR: Measurement-based KER results show that selection of the wavelet can significantly change the performance of the key error rate (KER) performances when different wavelet families are utilized as a pre-processing step in PHY key generation.
References
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A direct derivation of a single-antenna reciprocity relation for the time domain
TL;DR: In this article, a single-antenna reciprocity relation for the time domain is derived for the antenna on transmission; next, the same antenna is considered when it is receiving an incident plane wave.
Proceedings ArticleDOI
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Journal ArticleDOI
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Proceedings ArticleDOI
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