Analysis of the channel capacity under OFDM system with insufficient CP

作者：Liu X Y; Yang H W

来源：2014 International Conference on Energy Research and Power Engineering, ERPE 2014, 2014-05-17 To 2014-05-18.

DOI：10.4028/www.scientific.net/AMR.986-987.2052

• Capacity
• Channel impulse response
• CP length
• Cyclic Prefix
• Monotonic functions
• OFDM signal
• OFDM systems
• Power delay profiles

The standard OFDM signal requires a cyclic prefix (CP) of length larger than the channel impulse response. This paper investigates the effect of CP length to the capacity of OFDM system. We have found that full CP or none CP may not be optimal in the sense of capacity. Specifically, the capacity is a monotonic function of CP length in the low and high SNR regime and is approximately concave down when SNR is about 3dB.

• 出版日期2014
• 单位北京邮电大学