Implementation and performance of low complexity SIMO OFDM timing synchronization
WTS'09 Proceedings of the 2009 conference on Wireless Telecommunications Symposium
WSEAS TRANSACTIONS on COMMUNICATIONS
Iterative QR decomposition architecture using the modified gram-schmidt algorithm for MIMO systems
IEEE Transactions on Circuits and Systems Part I: Regular Papers - Special issue on ISCAS 2009
IEEE Transactions on Circuits and Systems Part I: Regular Papers
Computers & Mathematics with Applications
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This work presents a novel synchronization architecture for a 2times2 MIMO OFDM WLAN system. A new CORDIC-based sinusoidal iterative oscillator architecture is also implemented to recover the carrier frequency. The proposed design mainly enhances the traditional digital oscillator, which is a CORDIC-based architecture, and which is adopted at each accumulated phase. Compared to the iterative CORDIC computation, the proposed CORDIC-based sinusoidal iterative oscillator architecture operates the CORDIC only once. Moreover, the timing controller negotiates these two antenna input signals, and gates the useless signal to lower the power consumption. The proposed architecture with high precision is simulated and emulated by 0.18 mum 1P6M CMOS technology and FPGA respectively