Implementation of error correcting methods to the asynchronous Delay Insensitive codes with reduced delay and area
Shilpa Reddy · IOSR Journal of Electronics and Communication Engineering · 2013
This Paper provides an approach for reducing delay and area in asynchronous communication.A new class of error correcting Delay Insensitive (ie., unordered) codes is introduced for global asynchronous communication.It simultaneously provides timing-robustness and fault tolerance for the codes.A systematic and weighted code is targeted.The proposed error correcting unordered (ECU) code, called zero-sum can provide 1-bit correction.The extensions to the zero-sum code are given.The zero_sum⁺ code provides 3-bit error detection,or it can provide 2-bit detection and 1-bit correction.The zero_sum* code support 2-bit correction,while still guaranteeing 2-bit detection under different strategies of weight assignments.Zero_sum* code provides 2-bit correction coverage (50 % to 70%) of all 2-bit errors.The proposed method reduces delay occurred, due to the transfer of corrupted bits in a packet on the channel by the removal of timer and also reduces the area with the proposed Completion Detector (CD).