IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
A QoS-aware VoD resource sharing scheme for heterogeneous networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
IEEE Transactions on Signal Processing
Convergence analysis of downstream VDSL adaptive multichannel partial FEXT cancellation
IEEE Transactions on Communications
On signal-to-noise ratio-assisted crosstalk channel estimation in downstream DSL systems
IEEE Transactions on Signal Processing
EURASIP Journal on Advances in Signal Processing
Iterative receiver based on SAGE algorithm for crosstalk cancellation in upstream vectored VDSL
ISRN Communications and Networking
| Hi-index | 35.69 |
In this paper, we study a simplified linear precoding scheme for far-end crosstalk (FEXT) cancellation in very high bit-rate digital subscriber line (VDSL) downstream transmission. We compare the proposed method to zero-forcing (ZF) FEXT cancellation and show that for multipair VDSL systems the method achieves rates that are close to the ZF precoding method. We also derive simple lower bounds on the performance that allows us to predict the performance of the proposed algorithm on each tone. We end up with testing the proposed method on theoretical and empirical channels. This is the first extensive study of VDSL precoding on measured channel data. The proposed method is less complex than ZF precoding and, therefore, alleviates the computational load at the initialization and tracking of precoded VDSL or VDSL2 systems. Finally, we discuss implementation complexity in terms of total Silicon area and show that the method has favorable implementation complexity, since only channel coefficients need to be stored during steady-state transmission.