If g(n) is a real valued sequence of 2N points and x1(n)=g(2n) and x2(n)=g(2n+1), then what is the value of G(k), k=N,N-1,…2N-1?
A. X1(k)-W2kX2(k)
B. X1(k)+W2kNX2(k)
C. X1(k)+W2kX2(k)
D. X1(k)-W2kNX2(k)
Answer:A
If g(n) is a real valued sequence of 2N points and x1(n)=g(2n) and x2(n)=g(2n+1), then what is the value of G(k), k=N,N-1,…2N-1?
A. X1(k)-W2kX2(k) B. X1(k)+W2kNX2(k) C. X1(k)+W2kX2(k) D. X1(k)-W2kNX2(k)
Explanation: Given g(n) is a real valued 2N point sequence. The 2N point sequence is divided into two N point sequences x1(n) and x2(n)