Performance Analysis of a Cellular System Using C-OFDM Techniques

The basic idea of COFDM is to split the modulation samples of incoming data stream onto a large number of carriers instead of modulating a unique carrier. Therefore, COFDM is an effective technique for combating multi-path fading and for high-bit-rate transmission over wireless channel. In a single carrier system a frequency selective fading can cause the entire transmission link to fail, but in COFDM multi carrier system, only a small percentage of the sub-carriers will be corrupted. Frequency and time interleaving in conjunction with forward error correction coding can then be used to correct for erroneous subcarriers.