tailieunhanh - báo cáo hóa học:" Letter to the Editor Corrections to “A Further Result about ‘on the Channel Capacity of Multiantenna Systems with Nakagami Fading”

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Letter to the Editor Corrections to “A Further Result about ‘on the Channel Capacity of Multiantenna Systems with Nakagami Fading”’ | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2009 Article ID 190895 2 pages doi 2009 190895 Letter to the Editor Corrections to A Further Result about on the Channel Capacity of Multiantenna Systems with Nakagami Fading Xianfu Lei Kai Yu and Pingzhi Fan Provincial Key Lab of Information Coding and Transmission Institute of Mobile Communications Southwest Jiaotong University Chengdu 610031 China Correspondence should be addressed to Xianfu Lei xflei81@ Received 15 September 2009 Accepted 21 October 2009 We correct some expressions obtained in the above paper. The corrected expressions will be useful for evaluating the channel capacity of wireless communication systems over fading channels. Copyright 2009 Xianfu Lei et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. Introduction In 1 Nadarajah and Kotz have presented some new useful expressions for evaluating the channel capacity of multiantenna systems in Nakagami fading. Here we would like to correct some expressions in 1 . 2. The Correct Expressions We find that 2 equation is not correctmark and should be modified as the sign before the function 2F2 should be instead of - xa-1 e-px log a bx dx 0 a V n r. Í aP J - I T I 1F1 a a 1 b a sin an b - r a p- Ị log p - V a T7 2 2 1 112 2 - a apd b 1 - a b 1 Therefore the expressions in 1 which are derived by using 2 equation need to be corrected. Specifically 1 equation 2 should be modified as Jkft - lnJk F tk 1 k A k sin kn 2 2 2 - pOU J - WiU 2 2 2 J Ă F2 1 1 2 2 - 2 J . Similarly 1 equations 9 and 11 should be corrected as JƠ J - n3 2erfi - Vn logJ Y 2log2 2J2 2 1 1 2 3 J 3 ft - -nft 2exp ft 2 - P log J-2 Y 2log2-2J 2F2f1 1 2 1J . 3 Figure 1 shows the differences between the correct and the wrong expressions. Numerical .