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首页> 外文会议>Annual IEEE International Systems Conference >Performance of constant envelope DCT based OFDM system with M-ary PAM mapper in AWGN channel
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Performance of constant envelope DCT based OFDM system with M-ary PAM mapper in AWGN channel

机译：具有恒定MDC PAM映射器的恒定包络DCT OFDM系统在AWGN信道中的性能

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摘要

Constant envelope discrete cosine transform based Orthogonal Frequency Divination Multiplexing (CE-DCT-OFDM) system is presented. The performance of such a system is examined over AWGN channel for transmission of data using M-ary pulse amplitude modulation (M-ary PAM) mapper. In the system, phase modulation (PM) is used to overcome the problem of high peak-to-average power that is typical in conventional DCT-OFDM systems. As a result the system permits high power amplifier to operate near saturation level and thus offers maximum power efficiency. Closed-form expression for bit error rate of the system is derived, illustrated, and compared to simulation results. Also, bit error rate performance of CE-DCT-OFDM and conventional DCT-OFDM systems are compared as a function of IBO and SNR using traveling-wave tube amplifier (TWTA) model. It is observed that CE-DCT-OFDM system offers a variety of advantages over conventional DCT-OFDM system.
机译：提出了基于恒定包络离散余弦变换的正交频分复用（CE-DCT-OFDM）系统。使用Mary脉冲幅度调制（Mary PAM）映射器在AWGN信道上检查了此类系统的性能，以进行数据传输。在系统中，相位调制（PM）用于克服传统DCT-OFDM系统中典型的高峰均功率问题。结果，该系统允许高功率放大器在饱和水平附近工作，从而提供最大的功率效率。推导，说明了系统误码率的闭式表达式，并将其与仿真结果进行了比较。此外，使用行波管放大器（TWTA）模型比较了CE-DCT-OFDM和常规DCT-OFDM系统的误码率性能，作为IBO和SNR的函数。可以看出，CE-DCT-OFDM系统比传统的DCT-OFDM系统具有多种优势。

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