I am working on transmitting ECG signal over wireless body area networks. According to IEEE802.15.4 standards , I am using ZigBee transceiver at 2.4 GHZ . Complex baseband equivalent channel model is used.
The steps are as follows :
1. Signal Compression
4. OQPSK modulation using the matlab function (oqpskmod)
5. Fading Channel plus AWGN
7. OQPSK Demodulation using the matlab function (oqpskdemod)
8. Decoding and Dequantization
* According to the IEEE 802.15.4 standard, a pulse shaping step is performed in the transmitter after the OQPSK modulation step .
I didn`t perform this pulse shaping process, and I obtained reasonable results. Is it necessary to perform this step ? If yes , How should the receiver be modified ?