The objective of this study is improving channel estimation accuracy in OFDM system because channel state information is required for signal detection at receiver and its accuracy affects the overall performance of system and it is essential to impro

Multicarrier modulations attract a lot of attention ranging from wireline to wireless communications compared to single carrier modulation because of theirs capability to efficiently cope with frequency selective fading channels. Much of attentio

CDMA (OFDM-CDMA), offers several key advantages such as immunity against narrowband interference and robustness in frequency-selective fading channels[2]. Such desirable properties make MC-CDMA an attractive choice for the present and future radio-co