2020
DOI: 10.1049/iet-com.2019.1049
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Mean‐based reciprocity calibration in TDD massive MIMO system

Abstract: Non-reciprocity limits the potential of time division duplexing (TDD) massive multiple-input and multiple-output (MIMO) systems. Due to the reciprocal channel, there is no need for downlink (DL) pilot transmission implies computational complexity reduction and saving precious time resources. In this study, the DL channel matrix is estimated using the uplink channel matrix by a novel reciprocity calibration technique. Non-reciprocity arises due to the hardware mismatch (HM) across the base station (BS) and the … Show more

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Cited by 2 publications
(1 citation statement)
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“…It becomes necessary to examine the massive-MIMO system performance in reciprocity calibration errors. The effects of reciprocity-calibration errors have been studied as multiplicative [10] and additive [11] errors in coefficient channels at BS. The model of multiplicative error is preferable because of its capability to catch the RF mismatches.…”
Section: Introductionmentioning
confidence: 99%
“…It becomes necessary to examine the massive-MIMO system performance in reciprocity calibration errors. The effects of reciprocity-calibration errors have been studied as multiplicative [10] and additive [11] errors in coefficient channels at BS. The model of multiplicative error is preferable because of its capability to catch the RF mismatches.…”
Section: Introductionmentioning
confidence: 99%