New scheme to protect parallel FFT using cardiac commonly in modern signal processing circuits

Abstract

The uses of FFTs are unavoidable in communication systems. As most of the information may be analog in this world and as transmission of information in digital form is more acceptable and efficient, FFTs plays an important role in present communication scenario. For a reliable communication the information that we transmit should be reached at the destination as such. But due to many factors the information that we transmits get altered. One of the main problems in communication system is soft error. Even though soft error doesn’t make any physical damage to the communication system it is dangerous. It has the ability to alter the values stored in the system. It may alter the transmitted message. A lot of techniques are available to detect the soft error and correct it. Those include TMR, ECC, parity SOS, and parity-SOS-ECC. All these assume that there can only be a single error in the circuit. The proposed system known as reduced precision redundancy considers Instead of using two full precision FFTs it uses two half precision FFTs as redundant FFTs. It limits the error, reduces area and power consumption.