Performance of STTC-MC-CDMA Systems with Imperfect Channel Estimation

Authors:
Lokesh Kumar Bansal;Aditya Trivedi;Rekha Gupta
Affiliations:
Department of Electronics and Communication Engineering, V.G.I., Gr. Noida, India;Department of Information and Communication Technology, ABV-IIITM, Gwalior, India;Department of Electronics Engineering, M.I.T.S., Gwalior, India
Venue:
Wireless Personal Communications: An International Journal
Year:
2014

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Abstract

Since, in a practical system perfect channel state information (CSI) is not possible due to presence of noise. This paper deals with the performance of space-time trellis code (STTC) in multi-carrier code-division multiple-access systems in presence of channel estimation (CE) error and results are compared with perfect CSI at the receiver. The pilot symbol assisted (PSA) technique is used for CE employing minimum mean-square error method. The symbol error rate (SER) performance is observed by employing Viterbi decoding algorithm to decode STTC code at the receiver in multi-path fading channel. The simulated SER performances in presence of CE error and with perfect CSI are compared with the theoretical performances to validate the theoretical analysis.