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In this paper, a space-time trellis-coded (STTC) multi-carrier code-division multiple-access (MC-CDMA) system for different states in multi-path fading channel is proposed, and the performance of the system is evaluated using simulation. The corresponding bit error rate (BER) is obtained using minimum mean-square error (MMSE), maximum-ratio combining (MRC), and equal-gain combining (EGC) receivers...
The paper presents pilot symbol aided adaptive channel estimation for uplink multicarrier code division multiple access (MC-CDMA) systems operating in fast fading channels. Channel impulse responses of active users are estimated periodically taking the assistance of pilot blocks. Time variations of channel coefficients between two successive pilot blocks are tracked using Kalman filtering method....
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