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Performance of a Hybrid Receiver in the Downlink Multicell CDMA System

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3 Author(s)
Islam, M.H. ; Wireless Commun. Res. Lab., Texas Univ., Richardson, TX ; Saquib, M. ; Al-Dhahir, N.

In this paper, we propose a novel low-complexity receiver, namely, a hybrid receiver (HR) for the downlink of a multicell code-division multiple-access (CDMA) system with a transmit delay diversity transmission scheme. The proposed receiver is designed by combining the merits of the decorrelating receiver (DR) and the conventional receiver (CR). Unlike most multiuser receivers, HR operates with the same information as CR. For a target performance metric (e.g., bit error probability (BEP)=10-2), the reduced-complexity HR significantly outperforms CR, DR, and minimum mean-square error (MMSE) receiver with estimated channel information. We also compare the performance of the reduced-complexity HR with a reduced-complexity MMSE receiver, which slightly outperforms the former at a price of higher complexity

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Signal Processing, IEEE Transactions on  (Volume:55 ,  Issue: 2 )