Claims
- 1. A communication method comprising the steps of:
- introducing a first phase change to an analog signal based on a value obtained from a look up table, said value being derived from a symbol specified by a data signal to form a modified first signal, said symbol being one of a plurality of symbols in a symbol constellation;
- adding said modified analog signal to said data signal to form a combined signal;
- transmitting said combined signal over a communication channel that introduces a channel phase change to said modified analog signal and said data signal to form a phase changed combined signal;
- receiving said phase changed combined signal comprising a phase changed modified analog signal and a phase changed data signal;
- identifying received symbol using said phase changed combined signal; and
- introducing a phase shift to said phase changed modified analog signal based on said received symbol to remove said first phase change and at least a portion of said channel phase change.
- 2. The communication method of claim 1 wherein said analog modified signal is a modified two dimensional analog signal and said data signal is a two dimensional data signal.
- 3. A communication method comprising the steps of:
- introducing a first phase change to an analog signal based on a symbol specified by a data signal to form a modified first signal, said symbol being one of a plurality of symbols in a symbol constellation;
- adding said modified analog signal to said data signal to form a combined signal;
- transmitting said combined signal over a communication channel that introduces a channel phase change to said modified analog signal and said data signal to form a phase changed combined signal;
- receiving said phase changed combined signal comprising a phase changed modified analog signal and a phase changed data signal;
- identifying a received symbol using said phase changed combined signal; and
- introducing a phase shift to said phase changed modified analog signal to remove said first phase change and at least a portion of said channel phase change, said phase shift being derived from a value obtained from a look up table, said value being derived from said received symbol.
- 4. The communication method of claim 3 wherein said analog modified signal is a modified two dimensional analog signal and said data signal is a two dimensional data signal.
- 5. A communication method comprising the steps of:
- introducing a first phase change to an analog signal based on a value obtained from a look up table, said value being derived from a symbol specified by a data signal to form a modified first signal, said symbol being one of a plurality of symbols in a symbol constellation;
- adding said modified analog signal to said data signal to form a combined signal;
- transmitting said combined signal over a communication channel that introduces a channel phase change to said modified analog signal and said data signal to form a phase changed combined signal;
- receiving said phase changed combined signal comprising a phase changed modified analog signal and a phase changed data signal;
- identifying a received symbol using said phase changed combined signal; and
- introducing a phase shift to said phase changed modified analog signal to remove said first phase change and at least a portion of said channel phase change, said phase shift being derived from a value obtained from a look up table, said value being derived from said received symbol.
- 6. The communication method of claim 5 wherein said analog modified signal is a
Parent Case Info
This application is a continuation of application Ser. No. 08/076,659, filed on Jun. 14, 1993, now abandoned.
US Referenced Citations (17)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0552034 A2 |
Jul 1993 |
EPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
76659 |
Jun 1993 |
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