Chia-Hsin Cheng

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OFDM applied systems are the candidates for the future wireless communications. However, high peak-to-average ratio (PAPR) degrades the system performance. Applying the signal space expansion into the signal selection scheme, PAPR reduction could be implemented in OFDM systems. In this paper, a selected mapping (SLM) applied scheme using signal space(More)
Europe (8), resident populations in these countries have been exposed to these virus lineages more frequently than populations in Asia, and therefore may have acquired a greater degree of preexisting cross-reactive immunity to pandemic (H1N1) 2009 virus. A recent review of human swine infl uenza infections suggests that they may not be uncommon (9),(More)
In this paper, we investigate the performance of various interference cancellation techniques in direct-sequence ultra-wideband (DS-UWB) communication systems. Multiple access interference (MAI) causes the performance of the conventional single user detector in DS-UWB systems to degrade. Due to high complexity of the optimum multiuser detector, suboptimal(More)
In this paper, we propose an adaptive particle swarm optimization (APSO) based partial parallel interference cancellation scheme for direct-sequence code-decision multiple access (CDMA) communication system over frequency selective fading channels. However, the partial cancellation tries to reduce the cancellation error in parallel interference cancellation(More)
tosporidium genotypes in sporadic cryp-tosporidiosis cases: fi rst report of human infections with a cervine genotype. A population genetic study of the Cryptosporidium parvum human genotype parasites. Genotype and subtype analyses of Cryp-tosporidium isolates from dairy calves and humans in Ontario. L, Sulaiman I, et al. Identifi cation of two different(More)
In orthogonal frequency division multiplexing (OFDM) communication systems, due to the environmental impact generated the multipath effect caucused signals distortion and attenuation in transmitted process, and due to relative motion between transmitter and receiver caused the Doppler Effect that makes the signal carrier offset. Therefore, the knowledge of(More)
Similar to code-division multiple access (CDMA) systems, UWB systems used for multiple access communication environments have the near-far problem, which degrades system performance. To overcome this drawback, several advanced receiver structures have been proposed. Unlike the conventional UWB receiver which treats multiple access interference (MAI) as if(More)