David W. Chi

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Orthogonal Frequency Division Multiplexing (OFDM) has gained a lot of popularity over the years. Due to its popularity, OFDM has been adopted as a standard in cellular technology and Wireless Local Area Network (WLAN) communication systems. To improve the bit error rate (BER) performance, forward error correction (FEC) codes are often utilized to protect(More)
Constant Envelope OFDM (CE-OFDM) addresses the major issue of a high peak-to-average power ratio (PAPR) in OFDM. However, since CE-OFDM is based on angle modulation, it suffers from the well known threshold effect which results in a large performance degradation at low carrier-to-noise ratios (CNRs). In this paper, we study the impact of the threshold(More)
In this paper, we present the performance analysis of an orthogonal frequency division multiplexing (OFDM) system which is subject to nonlinear distortion and channel estimation error in a Rayleigh fading channel. The nonlinear distortion is produced by a high power amplifier (HPA) located at the transmitter. The traditional approach for obtaining the bit(More)
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