Suitability of COFDM in 3G and Comparison with CDMA: A Technological Review
This paper gives the effectiveness measures of OFDM as a modulation technique for wireless radio applications. OFDM is checked as a modulation technique for telephony communication system. A comparative study of COFDM a variant of OFDM is done with the CDMA technology for the same application. Various performance matrices like multipath delay spread, channel noise, distortion of the signal (clipping), and timing requirements are depicted. The study will provide bird eye view of COFDM and CDMA for communication engineering. It was found by study that OFDM performs extremely well, providing a very high tolerance to multipath delay spread, peak power clipping, and channel noise.