VLSI Implementation of IDMA based Multiple Carrier Code Division Multiple Access for 4G Technologies
In this paper, the authors are designed a transceiver that achieves a data rate of minimum 4Gbps equivalent to the 4G standard of IEEE. Multiple Carrier -Code Division Multiple Access (MC-CDMA) is the combination of Code Division Multiple Access (CDMA) and Orthogonal Frequency Division Multiplexing (OFDM), therefore the advantages of both schemes can be achieved. In MC-CDMA scheme each data symbol is spreaded in frequency domain and transmitted on different subcarrier which eliminates frequency selective fading and show significant improvement in bit error rate performance. The existing system uses 1-dimensional interleaver for storing data from spreader. It has insufficient memory to interleave incoming data that provides bottleneck that reduces total system efficiency.