“…As a result of [24], we note that the CRLB of φ q,0,m based on the (2K + 1) sample observation of H q,k,m is inversely proportional to |g q,0 | 2 (2K + 1) for large K. Recall that B = (2K + 1) , and |g q,0 | 2 B is proportional to P t according to (22). Therefore, |g q,0 | 2 (2K + 1) is also proportional to P t .…”