Self-Interference Channel Characterization for Wideband 2 × 2 MIMO Full-Duplex Transceivers Using Dual-Polarized Antennas
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Bibliographic record
Abstract
This paper presents an investigation of the wideband self-interference (SI) channel characteristics of a 2×2 multiinput multi-output full-duplex transceiver using dual-polarized antennas. The measured SI channel power delay profiles at 2.45 GHz with 500 MHz span in various environments, anechoic chamber, laboratory room, and corridor, reveal that the SI channel can be represented by a multipath model consisting of two components: a quasi-static internal SI subchannel due to the specific Tx/Rx antenna structure and a time-varying external SI subchannel due to possible reflections from the surrounding environment. The quasi-static internal SI subchannel parameters can be derived from the Tx/Rx antenna structure specifications. The time-varying external SI channel exhibits cluster arrival features and can be represented by a modified Saleh-Valenzuela model with lognormal-distributed taps, and the cluster power exponentially decays with cluster arrival delay. However, the path power-versus-arrival-delay decay is exponential in a laboratory-room environment while it follows the power law in a corridor environment. The SI channel coherence bandwidth and delay spread in all three measurement environments follow normal and lognormal distributions, respectively.
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| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
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| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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