Debt-to-equity ratio On a balance sheet, the formal definition is that debt (liabilities) plus equity equals assets, or any equivalent reformulation. Both the formulas below are therefore identical: Debt to equity can also be reformulated in terms of assets or debt: General Electric Co. () Debt-to-equity ratio The debt-to-equity ratio (D/E) is a financial ratio indicating the relative proportion of shareholders' equity and debt used to finance a company's assets. Closely related to leveraging, the ratio is also known as risk, gearing or leverage. The two components are often taken from the firm's balance sheet or statement of financial position (so-called book
Signal-to-interference ratio (AWGN). The CIR ratio is studied in interference limited systems, i.e. where "I" dominates over "N", typically in cellular radio systems and broadcasting systems where frequency channels are reused in view to achieve high level of area coverage. The "C/N" is studied in noise limited systems. If both situations can occur, the carrier-to-noise-and-interference ratio (CNIR or C/(N+I)) may be studied. Signal-to-interference ratio The signal-to-interference ratio (SIR or S/I), also known as the carrier-to-interference ratio (CIR or C/I), is the quotient between the average received modulated carrier power "S" or "C" and the average received co-channel interference power "I", i.e. cross-talk,