Tham khảo tài liệu 'communication systems engineering episode 2 part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Aeronautics and Astronautics Comm. Sys. Engineering Date Issued march 4 2003 Problem Set No. 4 Date Due March 11 2003 Text Problems Hints notice that Am 2m-1-M d 2 For the M 8 constellation you will need your trigonometric laws of sins and cosines. For the probability of error just consider the power required to keep adjacent symbols at the same distance under both constellations. You will need trigonometry here again. Solve first for a by considering the nearest neighbors for the inner circle. Once you obtain a notice that the nearest neighbors for the outer circle are the two closest inner circle points not the other outer circle .
