Uncoordinated space-frequency pilot design for multi-antenna wideband opportunistic communications
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The statistical side information of interference channels is exploited in this paper to derive a novel uncoordinated on-line pilot design strategy for opportunistic communications. Assuming a time division duplex (TDD), or frequency division duplex (FDD) with feedback, wireless network and reciprocity, we prove that the space-frequency pilot design technique in terms of minimum cross-interference to external-network users reduces to a classical minimum-norm problem. The advantages of this novel methodology are time-domain invariance to noise-subspace rotations, a maximally flat angle-frequency response, and robustness in front of frequency calibration errors. Simulation results are reported to assess the performance of the proposed strategy and the advantages of its low-resolution quantization in low signal-to- noise ratio (low-SNR) regimes.
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CitacióBorràs, J., Vazquez, G. Uncoordinated space-frequency pilot design for multi-antenna wideband opportunistic communications. A: IEEE International Workshop on Signal Processing Advances in Wireless Communications. "2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)". Institute of Electrical and Electronics Engineers (IEEE), 2018, p. 1-5.
Versió de l'editorhttps://ieeexplore.ieee.org/document/8446026