SIR Estimation for Narrow-band M-PSK Modulated Radio Links
Erik E. Anderlind, Narayan B. Mandayam, Roy D. Yates · 1995
A large number of radio resource management algorithms rely on accurate measurements of the signal to interference ratio (SIR). We propose a simple, fast SIR estimator for narrowband M-PSK modulated signals (M > 2). The estimator does not require any overhead sequences of known symbols and it is shown to be asymptotically unbiased. It can produce an accurate estimate for each received signal burst. Numerical results are presented for a Rayleigh fading channel with one and several interferers.