<FONT face=Verdana>We have developed a low power and low bit error rate (BER) digital baseband as a part of wireless sensor network node system-on-a-chip (SoC)

namely Easibaseband..An automatic gain control (AGC) module has been proposed based on hardwareand software codesign which can save the power consumption of receiver up to 10.8%.It also realizes a digital matched filter (DMF) in receiver to reduce the BER.A phase ynchronization algorithm is also proposed.The transceiver utilizes FSK modulation encoder in baseband at a data rate of 111 kb/s in the 24GHz ISM band to provide wireless connectivity between two sensor nodes.The design has been validated in Spartan3E FPGA.The results showed that the proposed schemes achieve better performance than existing work.