Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking individual recipient phase, time and energy

A method for tracking the frequency and phase of carrier signals in a spread spectrum communication system in which information is communicated over signals that are bandwidth spread and encoded into channels using orthogonal codes, comprising the steps of:

• receiving a plurality of orthogonally channelized spread spectrum communication signals contemporaneously having a common carrier frequency and converting said signals to digital form;
• despreading received orthogonally Channelized communication signals using a preselected adjustable phase angle for applying despreading codes, and splitting said signals into first and second components producing first and second streams of code symbols;
• transferring said first and second streams of code symbols to first and second orthogonal function transformers, respectively, and generating first and second sets of signal bits;
• generating a phase correction signal from said first and second sets of signal bits by forming products between corresponding pairs, each pair comprising one bit each from said first and second sets, of said signal bits and summing said products over multiple orthogonal codes active within said communication system;
• and
• adjusting said preselected phase angle in response to a value of said phase correction signal.

Apparatus for tracking the frequency and phase of carrier signals in a spread spectrum communication system in which information is communicated over signals that are bandwidth spread and encoded into channels using orthogonal codes, comprising:

• means for receiving and converting a plurality of spread spectrum communication signals having a common carrier frequency to digital form;
• means for despreading connected to an output of said means for receiving and converting, for despreading said digital spread spectrum communication signals by applying at least one preselected despreading code at an adjustable phase angle;
• means for decoding connected to receive multiple ones of said despread communication signals in parallel for removing said orthogonal encoding, over multiple orthogonal codes active within said communication system, to generate multiple data symbol signals;
• means for summing connected to receive a plurality of said multiple data symbol signals for forming a single phase detection signal;
• at least one timing loop connected to receive said phase detection signal to track the frequency thereof and output a timing signal indicative of carrier signal frequency;
• and
• means for adjusting said phase angle of said despreading means in response to said timing signal from said timing loop.

Apparatus for tracking the phase of carrier signals in a spread spectrum communication system in which information is communicated over signals that are bandwidth spread and encoded into channels using orthogonal codes and transmitted to at least one recipient at a time, comprising:

• means for receiving a plurality of spread spectrum communication signals having a common carrier frequency and converting said signals to digital form;
• means for despreading using an adjustable phase angle for applying despreading codes to produce code symbols, connected to receive said digital form signals, and for splitting said signals into first and second components;
• means for performing orthogonal function transformations on said first and second components of code symbols to produce first and second sets of signal bits, respectively, connected to outputs for said despreading and splitting means;
• means for generating a phase correction signal from said first and second sets of signal bits connected in series with said transformation means, said generating occurring in part by forming products between corresponding pairs of said signal bits, and summing said products over multiple orthogonal codes active within said communication system;
• and
• means for adjusting said preselected phase angle in response to a value of said phase correction signal.

Apparatus for tracking the phase of carrier signals in a spread spectrum communication system in which information is communicated over signals that are bandwidth spread and encoded into channels using orthogonal codes transmitted to at least one recipient at a time, comprising:

• at least one analog receiver configured to receive a plurality of spread spectrum communication signals having a common carrier frequency and convert said signals to digital form;
• a digital signal despreader and splitter connected to receive said digital form signals and produce I and Q streams of component symbols by applying despreading codes at a preselected adjustable phase angle;
• orthogonal function transformers connected one each in series with said I and Q outputs for said despreader and splitter, which operates on said streams of I and Q component symbols to produce sets of I and Q signal bits, respectively;
• a phase correction signal generator connected in series with said transformers to receive said I and Q signal bits, and configured to form products between corresponding pairs of said I and Q signal bits, and sum said products over multiple orthogonal codes active within said communication system to form a phase correction signal;
• and
• a phase angle adjuster connected to said digital signal despreader and splitter and said phase correction signal generator, which alters said preselected phase angle in response to a value of said phase error correction signal.

A spread spectrum communication system in which a plurality of data signals to be transmitted are spread according to a predetermined spreading code, comprising:

• a plurality of gateway type base stations each including at least one communication signal transmitter, comprising:
• a plurality of signal generating means for generating a plurality of function signals each according to a respective function of a plurality of orthogonal functions;
• a plurality of spreading means each connected to a respective signal generator means for receiving a respective data signal of the plurality of data signals and for producing a respective spread spectrum data signal in response to a respective function signal;
• combining means connected to the plurality of spreading means for providing a spread spectrum communication signal combining a plurality of spread spectrum data signals;
• and
• transmission means connected to the combining means for amplifying and transmitting the spread spectrum communication signal;
• a plurality of user terminals each including a user receiver, comprising:
• means for selecting and receiving a spread spectrum communication signal from at least one gateway having a common carrier frequency and converting said signal to digital form;
• means for despreading said digital form signals using an adjustable phase angle for applying despreading codes to produce code symbols, connected to said means for selecting and receiving,
• means for decoding multiple ones of said despread communication signals in parallel to remove said orthogonal encoding, over multiple orthogonal codes active within said communication system, to generate multiple data symbol signals;
• means for summing a plurality of said multiple data symbol signals to form a single phase detection signal;
• means for inputting said phase detection signal to at least one timing loop to track the frequency thereof and for outputting a timing signal indicative of carrier signal frequency;
• and
• means for adjusting said phase angle used in said despreading in response to said timing signal from said timing loop.

A method for spread spectrum-communication between a plurality of gateway type base stations and a plurality of user terminals, comprising the steps of:

• generating a plurality of function signals at each gateway each according to a respective function of a plurality of orthogonal functions;
• generating a plurality of spread spectrum data signals by combining a respective function signal with one of at least one data signal;
• producing a spread spectrum communication signal by summing the plurality of spread spectrum data signals together, and amplifying and transmitting the spread spectrum communication signal;
• selecting and receiving spread spectrum communication signals from at least one gateway having a common carrier frequency at one or more user terminals and converting said signals to digital form;
• despreading said digital form signals using an adjustable phase angle for applying despreading codes to produce multiple code symbol signals;
• performing orthogonal function transformations on a plurality of said multiple code symbol signals in parallel to remove orthogonal encoding, over multiple orthogonal codes active within said plurality of user terminals, and produce multiple data symbol signals;
• generating a phase correction signal from said data symbol signals by summing a plurality of said multiple data symbol signals;
• inputting said phase correction signal to at least one timing loop to track the frequency thereof, and generating a timing signal indicative of carrier signal frequency;
• and
• adjusting said phase angle in said despreading in response to said timing signal from said timing loop.