A low complexity, stabilized precoder for broadband indoor radio is present
ed, which uses radial root reduction for stability, and so avoids the use o
f a module operator. Simulations show that the stabilized precoder has comp
arable performance to Tomlinson-Harashima (TH) preceding with perfect autom
atic gain control (AGC), and is immune to AGC fluctuations which degrade th
e performance of TH preceding.