Drop-shipping is a streamlined form of retail business wherein the seller accepts customer orders but does not keep goods sold in stock. Instead, in a drop-shipping model, when the store sells a ...
Abstract: Extremely large-scale multiple-input-multiple-output (XL-MIMO), which offers vast spatial degrees of freedom, has emerged as a potentially pivotal enabling technology for the sixth ...
Abstract: Sixth-generation (6G) mobile communication networks are expected to have dense infrastructures, large antenna size, wide bandwidth, cost-effective hardware, diversified positioning methods, ...
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