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Multiplication of a point is the main operation in elliptic curves cryptography system. It is well-known this operation be expensive in time-consuming. we try to improve the computing efficiency of multiple point which will increase the efficiency of elliptic curves cryptography. In order to reach this goal, on the basis of addition-subtraction method, we adopt recursive formula of double point to...
The differential constant modulus (DCMA) multiuser detection can obtain higher steady-state decorrelating performance than the conventional linear algorithm under high SNR condition similar as the constant modulus algorithm (CMA). Unlike CMA criterion, DCMA has single global minimum which leads to the convergence independent from the amplitudes of received signal. However, the closed-form analysis...
As an important part of requirement management, managing requirement change plays a key role in controlling project schedule and costs at early stage. Effective requirement impact analysis would give proper assessment on the effect of certain requirement changes on the whole system, and provide useful information for making trade-off decisions on future system design and implementation. In this paper...
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