PERFORMANCE ANALYSIS OF PRECODING ALGORITHM IN THE PRESENCE OF CHANNEL ESTIMATION ERRORS
Crosstalk is the major limiting factor affecting the achieve rate of VDSL/VDSL2 system. Several crosstalk precoder and canceller methods have been proposed respectively for downstream and upstream transmission, which are based on the assumption that the crosstalk channel matrices on each tone are known in advance. In practice, however, these matrices are estimated from training data. This paper first considers the performance analysis of the proposed method when the estimated crosstalk channel matrices have errors and discusses how these errors affect the performance of the proposed methods. The explicit expressions of the achieve rate for different algorithms in the presence of estimation errors are derived, some useful conclusions are obtained from computer simulation results.
Digital subscriber line crosstalk cancellation channel estimation errors achieve rate
Wang Xupeng Li Youming Liu Jixiong Zhao Jie
Network Centre of Library Ningbo University 315211 Ningbo,China Institute of Communication Technology Ningbo University 315211 Ningbo,China
国际会议
太原
英文
239-243
2011-02-26(万方平台首次上网日期,不代表论文的发表时间)