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This work was supported by the Brain Korea 21 Project. Abstract−The effective applications of the proportional fair scheduling (PFS) scheme are investigated for the downlink of a cellular system with multiple transmit and receive antennas. We propose an improved PFS scheme based on spatial multiplexing (SM), referred to as P-PFS/SM, after reviewing the(More)
A baseband digital narrow-band FM receiver, called zero-intermediate frequency zero-crossing demodulator (ZIFZCD), has been recently developed. This demodulator may offer low complexity and simple implementation. However, the bit error rate (BER) performance of the ZIFZCD is inferior to that of the limiter-discriminator-integrate-and-dump (LDI) demodulator.(More)
In this paper, we propose a simplified Maximum Likelihood (ML) detection scheme based on multi-stage likelihood test for MIMO systems. The proposed scheme chooses several surviving symbol combinations at each stage by likelihood tests for the restricted sub-streams, feeds them to the next stage, and finally detects whole sub-streams at the last stage.(More)
This work was supported by the Brain Korea 21 Project. Abstract~A generalized code acquisition scheme for DS/CDMA systems with multiple antennas is proposed over frequency-selective fading channels. The proposed scheme is developed on the framework of a generalized configuration of multiple antennas and correlators. The nonconsecutive search method is(More)
Multiple transmit (Tx) and multiple receive (Rx) antennas systems, referred to as multiple input multiple output (MIMO) systems, have been proposed to achieve higher data rates in wireless communication systems. In this paper, we investigate joint optimization of transmitter and receiver for MIMO system when the channel information is available at both(More)
Multi-carrier Code Division Multiple Access (MC-CDMA) has been an attractive technique for wireless communication because it offers high data rate, high spectral efficiency, large system capacity, less transmit power and less implementation complexity. But due to Carrier Frequency Offset (CFO), which comes into account due to asynchrony between transmitter(More)