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A 64-state 16-QAM space-time trellis code (STTC), which uses two transmitting antennas, is proposed and applied to a 2??2 MIMO-OFDM system for outdoor mobile transmission in the 800-MHz band. Although STTCs have been analyzed theoretically and the error performances have been simulated by many researchers, experimental results have rarely been reported. Therefore, we evaluated the performance of our...
This paper presents a high-speed low-density parity-check (LDPC) decoder chip using a new decoding algorithm, called a flooding-type update-schedule algorithm. Since node computations are performed using partially updated messages in the proposed algorithm, because of the good similarity among time-consecutive messages, data-transmission bottleneck between nodes for node computation is greatly reduced...
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