Lossless Compression and Implementation for Medical Signals Using Verilog

In this paper, a lossless bio signal compression method known as Log2 sub band compression is implemented. A xor-Log2 sub-band compression where two data samples are compared to identify differences between them. This compression technique is applied for two random 24-bit bio medical signals. One block is current data which has data to be compressed and previous data has no value initially. There are four cases where the number of bits to be compressed are 8, 14, 20 and 26 bits. Compression occurs on certain count taken as 10, 16, 22 and 28. The compressed data is transmitted serially. Simulation and synthesis are performed on Xilinx ISE. Area occupied by the compressor is 83% of the total LUT-FF pairs which is quite considerable, and power consumed is 0.014 W which can make the overall compressor optimized. The delay taken by the compressor is 3.324 ns. Lesser the delay more fast the compression takes place.