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Effect of Power Amplifier Impairments in Designing OFDM Based Wireless Communication Systems

Overview New generation Wireless Local Area Network (WLAN) standards (like 802.11a and HyperLAN2) use Orthogonal Frequency Division Multiplexing (OFDM) modulation technique because of its ability to offer high data rates while combating the multipath effects encountered in high speed wireless channels. However, OFDM modulated signals have high peak-to-average power ratio (PAPR), and thus can be distorted easily due to the nonlinearity of power amplifiers in transmitters, leading to significant performance loss, large error-vector-magnitude (EVM), high bit-error-ratio (BER) and frame-error-rate (FER) results. This paper clarifies the relationship between the impairments of the received signal and the nonlinear performance parameters of power amplifiers.

Further White Paper Details
Publisher	University of South Florida	File Format	PDF, requires Acrobat Rdr 5
Date Published	September 2003	Downloads	34
Format	White Papers
Topics	Modems, Mobile - Wireless Communications

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