OFDM系统中一种实用的干扰抑制信道估计算法

doi:10.11959/j.issn.1000-0801.2016013

Abstract

Abstract:

In OFDM system,the least square（LS）algorithm has the shortage of noise cancelling and interference suppressing.An utility channel estimation algorithm which took advantage of the time frequency characteristic in OFDM system was proposed.The new channel estimation algorithm realized noise cancelling and interference suppressing through time-frequency transform by three times.In view of time-frequency transform could be achieved by FFT/IFFT,the new channel estimation algorithm complexity was low.In the TU channel simulation,the new channel estimation algorithm has the high performance,which was 3 dB better than the LS algorithm.In the TU channel simulation with interference suppression,the new channel estimation algorithm has only 1.5 dB reduction in performance.

Key words: OFDM, channel estimation, interference suppression

Xiaoyang LAI,Lin DUO. Utility channel estimation algorithm with interference suppression in OFDM system[J]. Telecommunications Science, 2016, 32(1): 88-92.

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传播路径	功率/dBm	时延/ns
0	-3	0
1	0	200
2	-2	600
3	-6	1 600
4	-8	2 400
5	-10	5 000

Utility channel estimation algorithm with interference suppression in OFDM system

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