DETECTION SCHEMES FOR MC-CDMA (4G) MOBILE SYSTEM: A REVIEW
Anmol Kumar, Jyoti Saxena, Gzs Ptu · 2015
In present mobile communication scenario where users demand is more for high speed data rather than voice we need more bandwidth to accommodate data as well as voice. 4G standards are being rolled out in different parts of world which are said to give data rate up to 20 Mbps. Various voice and multimedia applications are possible only with this kind of data speed. Even though orthogonal frequency division multiplexing-long term evolution (OFDM-LTE) is the basic radio technology being used to provide 4G implementation but peak-to-average-power ratio (PAPR) and multipath fading are some problems with OFDM-LTE, which encourage the employment of multicarrier code division multiple access (MC-CDMA) as an alternate technology for 4G systems. Moreover MC-CDMA is also being discussed as basic technology for fifth generation mobile systems (5G). MC-CDMA is basically a combination of CDMA and OFDM. It provides frequency diversity to the transmitted data due to which problems like PAPR and multipath fading are mitigated. In this paper various detection schemes for MC-CDMA systems have been reviewed under different parameters.