Implementation of physical downlink control channel (PDCCH) FOR LTE using FPGA

LTE is accepted worldwide as the Long Term Evolution Perspective for today´s 3G and 4G networks. The downlink physical channels of LTE include 3 data channels (PDSCH, PMCH and PBCH) and 3 control channels (PDCCH, PCFICH and PHICH). Control channels are inevitable for the transmission of both downlink and uplink data channels. Control information for one or multiple user equipments are contained in Downlink Control Information (DCI) and transmitted through PDCCH. This paper deals with transmitter architecture for PDCCH comprising of Scrambling, Modulation, Layermapping, Precoding and Resource element mapping and receiver architecture comprising of Demapping from resource elements, Removal of parity bits, Decoding, Delayermapping, Demodulation and Descrambling as described in LTE specifications. Modelsim 6.4a is used for simulation and implementation done in Xilinx Spartan 3E kit.