Table 1 The number of multiplications required in the operations for the interference term reconstruction at each branch per iteration of the proposed scheme
From: Iterative detection for frequency-asynchronous distributed Alamouti-coded (FADAC) OFDM
Operation | Number of multiplications |
|---|---|
IFFT input vector generation | N |
IFFT for time domain conversion | \(\frac {N}{2} {\log }_{2} N\) |
N-point complex sinusoid multiplication | N |
FFT for the original OFDM demodulation | \(\frac {N}{2} {\log }_{2} N\) |
Total | 4N+2N log2N |