RAM based physical-layer identity detector for 3GPP Long Term Evolution

Employing OFDMA and scalable bandwidth scheme in Long Term Evolution (LTE) downlink access impact on increasing complexity in frequency domain physical layer identity detection. Therefore, in this paper, we propose time domain detection instead of frequency domain using finite impulse response (FIR) filter and partial cross-correlation. Moreover, we implement RAM based architecture instead of multipliers and registers in filtering and cross-correlation computation. As result, the proposed system complexity is less than 128 point FFT. As addition, more than 95% physical layer identity can be detected correctly in SNR = 0 dB or higher for AWGN channel condition.