Chia-Ching Lee

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In this paper, we propose a VLSI design of a 4×4 MIMO-OFDMA down-link baseband receiver for the mobile communications. The receiver consists of synchronization, channel estimation/compensation, precode codebook search, and MIMO detection. To realize the closed-loop MIMO system in the mobile environment, we utilize the MMSE-OSIC algorithm for MIMO detector(More)
In this paper, we propose a downlink OFDMA processor based on the 3GPP LTE. This processor supports scalable bandwidth for different OFDMA modes. A low-cost sampling rate conversion is employed to obtain different sampling rates for different bandwidths. Timing and frequency synchronization are then designed to recover the time and frequency mismatch(More)
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