Channel normalization

A communication reception method comprising:

• (a) receiving pilot and data signals transmitted from a plurality of antennas of a transmitter;
• and
• (b) estimating a data channel from said transmitter using (i) said received pilot signals, (ii) estimates of weights of said antennas, and (iii) averages including squared magnitudes of said received data signals;
• (c) wherein said averages of step (b) are averages over sets of transmitted symbols and include averages of |y(m,k)|2 f(m,k)σ2)/f(m,k)2 E[|s(m,k)|2] where y(m,k) is a detection of transmitted data symbol s(m,k), f(m,k) is a squared magnitude of a pilot channel estimation including antenna weights, σ2 is a noise variance estimation, and F denotes expectation.

A communication reception method, comprising:

• (a) receiving pilot and data signals transmitted from a plurality of antennas of a transmitter;
• and
• (b) estimating a data channel from said transmitter using (i) said received pilot signals, (ii) estimates of weights of said antennas, and (iii) averages including magnitudes of real and imaginary parts of said received data signals;
• (c) wherein said averages of step (b) are averages over sets of transmitted symbols and include averages of (|Re{y(m,k)}|+|lm{y(m,k)}|)/2f(m,k)E[|Re{s(m,k)}|] where y(m,k) is a detection of transmitted data symbol s(m,k), f(m,k) is a squared magnitude of a pilot channel estimation including antenna weights, and F denotes expectation.

A communication reception method, comprising:

• (a) receiving pilot and data signals transmitted from a plurality of antennas of a transmitter;
• (b) estimating a data channel from said transmitter using (i) said received pilot signals for a first set of transmitted pilot symbols within a first time slot, (ii) estimates of weights of said antennas for said first time slot, and (iii) averages of said received data signals for a first set of transmitted data symbols;
• and
• (c) re-estimating said data channel using the results of step (b) together with said received pilot signals for a second set of transmitted pilot symbols within said first time slot.