TDMA wireless telephone system with independently tracked demodulation parameters

In a wireless telephone system having a base unit and a plurality of wireless handsets, the base unit comprising a base transceiver having a base receiver, a method for establishing, for each handset, a wireless link over a shared RF channel with the base unit transceiver, characterized in that the method comprises the steps of:

• (a) synchronizing, with an automatic gain control (AGC) loop, a carrier tracking loop (CTL), and an equalization loop of the base receiver, at the beginning of time slots for each handset, with the handset in accordance with a set of demodulation parameters for the handset, wherein each set of demodulation parameters comprises an AGC state parameter for determining the state of the AGC loop, a CTL frequency parameter and a CTL NCO parameter for determining the state of the CTL loop, and a set of equalization coefficients for determining the state of the equalization loop;
• (b) storing a set of demodulation parameters for each handset in accordance with the demodulation parameters utilized for the most recent time slot for the handset;
• and
• (c) switching, during synchronization, to the stored set of demodulation parameters for a particular handset when the base unit is to synchronize with the particular handset.

A base unit for communicating with a plurality of wireless handsets, comprising:

• (a) a base transceiver having a base receiver and a base transmitter for establishing a wireless link over a shared channel with the handsets;
• (b) synchronization means comprising an automatic gain control (AGC) loop, a carrier tracking loop (CTL), and an equalization loop, characterized in that the synchronization means is for synchronizing with each handset in accordance with a set of demodulation parameters for said each handset, wherein each set of demodulation parameters comprises an AGC state parameter for determining the state of the AGC loop, a CTL frequency parameter and a CTL NCO parameter for determining the state of the CTL loop, and a set of equalization coefficients for determining the state of the equalization loop;
• and
• (c) means for storing a set of demodulation parameters for each handset in accordance with the demodulation parameters utilized for the most recent time slot for the handset and for switching the synchronization means to the set of demodulation parameters for a particular handset when the base unit is to synchronize with the particular handset.