Automatic data bypass of a removed/failed CDMA channel unit

A method for encoding a plurality of data streams in a code division multiple access format to produce a composite output signal, comprising:

• providing a series chain of channel units each having at least one chip encoder and a digital combiner;
• applying at least one of said data streams to each of said channel units;
• encoding the at least one data stream applied to each said channel unit with the at least one associated chip encoder therein;
• combining the at least one data stream encoded within each said channel unit with a preceding encoded output signal having cumulative encoded data produced by a preceding channel unit in the series chain;
• and
• producing, by at least a selected one of said channel units, an associated one of said encoded output signals as a direct output signal that is selectively provided to a first subsequent one of said channel units, said selected channel unit further producing a bypass output signal having cumulative encoded data that is applied to a further subsequent channel unit in order to bypass said first subsequent channel unit.

Base station transmitter circuitry for use in a wireless telecommunication system, comprising:

• a controller for receiving a plurality of input information-bearing signals of separate communication sessions from a telephone network and generating therefrom a plurality of data streams, each corresponding to one of said input signals;
• a series chain of code division multiple access channel units, each for encoding at least one of said plurality of data streams and each having a digital combiner for successively combining the at least one data stream encoded therein with a preceding encoded output signal having cumulative encoded data provided by a preceding one of said channel units in said series chain, wherein each channel unit produces an associated encoded output signal;
• and,
• at least one of said channel units capable of providing said associated encoded output signal as a direct output signal to a first subsequent one of said channel units, and of providing a bypass output signal having cumulative encoded data to a further subsequent one of said channel units to bypass said first subsequent channel unit.

An apparatus for encoding a plurality of data streams in a code division multiple access format, comprising:

• a plurality of channel units coupled in series, each for encoding at least one of said plurality of data streams and each having a digital combiner for successively combining the at least one data stream encoded therein with a preceding encoded output signal having cumulative encoded data provided by a preceding one of said channel units in the series, wherein each channel unit produces an associated encoded output signal;
• at least a selected one of said channel units providing said associated encoded output signal as a direct output signal that is provided to a first subsequent one of said channel units, and further providing a bypass output signal that is provided to a further subsequent one of said channel units, said bypass output signal being substantially equivalent to said direct output signal delayed by a predetermined delay;
• and
• said further subsequent channel unit operable to combine data encoded therein with encoded data of either said bypass output signal from said selected channel unit or the associated encoded output signal from said first subsequent channel unit.