A sensor device for detecting product quality conditions is attached to each product to be delivered, and constant monitoring is performed on quality conditions of stock products in a storage room of a delivery center for quality assurance. The data path has provisions for completely independent parallel data flows giving true scalability to arbitrarily high throughput. For MIMO users, the problem is that the CQI cannot be reconstructed for all re-use sets, using the current design. A conducting gate layer is placed over the upper silicon dioxide layer.