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首页> 外文会议>Broadband Multimedia Systems and Broadcasting, 2009. BMSB '09 >ICI cancellation for relay communication systems with multiple frequency offsets
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ICI cancellation for relay communication systems with multiple frequency offsets

机译：具有多个频率偏移的中继通信系统的ICI取消

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摘要

In this paper, an interchannel interference (ICI) cancellation method is proposed for multiple frequency offsets in orthogonal frequency division multiplexing (OFDM) systems. When signals are received from different transmitters simultaneously like in a relay communication, multiple frequency offsets may appear at the receiver. This causes interchannel interference (ICI) and severe performance degradation because OFDM systems are very sensitive to the frequency offsets. In this paper, we propose a method to eliminate the effect of the multiple frequency offsets for OFDM systems. The method is accomplished in two steps: compensation of the frequency offset in time domain and subsequent cancellation of the ICI in frequency domain. Through computer simulations, we verify the effectiveness of the proposed ICI cancellation method.
机译：针对正交频分复用（OFDM）系统中的多个频偏，提出了一种信道间干扰（ICI）消除方法。当像中继通信一样同时从不同的发射机接收信号时，接收机上可能会出现多个频偏。因为OFDM系统对频率偏移非常敏感，所以这会导致信道间干扰（ICI）和严重的性能下降。在本文中，我们提出了一种消除OFDM系统多频偏影响的方法。该方法分两个步骤完成：在时域中补偿频偏，然后在频域中取消ICI。通过计算机仿真，我们验证了提出的ICI抵消方法的有效性。

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