Method for error compensation in an OFDM system with diversity

1. A mobile communication device, said mobile communication device including a processor configured to implement a process comprising:

compensating for channel characteristic impacts on information signals on a received multiple-tone transmission signal, wherein said compensating includes, in regard to the received signal,

detecting a symbol on a pilot tone selected from one of the multiple tones,

generating first error estimation using tire detected symbol on the pilot tone,

generating a corrected symbol on others of said multiple tones using the received signal and the first error estimation

selecting a subset of said others of said multiple tones as pseudo pilot tones,

generating a second error estimation using the selected pseudo pilot tones, and

generating an enhanced corrected symbol for said others of said multiple tones using the received signal and the second error estimation.

2. The mobile communication device of claim 1 , further comprising one or more antennas configured to receives the multiple-tore transmission signal.

3. A mobile communication device, said mobile communication device comprising a signal processor for processing signals of a wireless communication system in which symbols are transmitted on a transmission carrier that includes a plurality of carrier tones, said signal processor being configured to perform a method for compensating for channel effects on transmitted symbols, the method comprising:

generating a first error estimation with reference to a pilot tone in a received transmitted signal;

generating corrected symbols with reference to others of said plurality of carrier tones using the first error estimation;

selecting a subset of said plurality of carriers as constituting pseudo pilot tones;

generating a refined error estimation using the generated corrected symbols corresponding to the selected pseudo pilot ones; and

correcting symbols on the plurality of carrier tones using the refined error estimation.

4. The mobile communication device of claim 3 , wherein the selecting the pseudo pilot tones comprises identifying, for a plurality of tones, a probability that a symbol detected from a carrier tone corresponds to the symbol transmitted on that carrier tone; and

when the identified probability exceeds a threshold, selecting that carrier tone as a pseudo pilot tone.

5. A mobile communication device, said mobile communication device comprising a signal processor configured to implement a method for enhancing error processing in a multi-carrier signal transmission system, the method comprising:

receiving a plurality of symbols, each on a different carrier, wherein said plurality of symbols includes a reference symbol on a first carrier;

generating a first error correction parameter using the received reference symbol;

correcting a remainder of the received plurality of symbols using said first error correction parameter;

determining a probability that a corrected received symbol has been accurately detected;

if the determined probability exceeds a first threshold, generating a second error correction parameter using the corresponding received symbol; and

correcting the remainder of the received plurality of symbols using said second error correction parameter.

6. A mobile communication device, said mobile communication device comprising a processor configured perform a method for enhancing error correction in a multi-carrier transmission system, an further comprising one or more antennas configured to receive a version of a multi-carrier transmission signal, said method comprising:

detecting a transmitted multi-carrier transmission signal at said one or more antennas;

processing the multi-carrier transmission signal detected by at least one of said one or more antennas to provide error parameters for use with processing the detected multi-carrier transmission signal, said processing including the following operations associated with the at least one antenna,

detecting a reference symbol on a first carrier;

comparing the detected reference symbol to a standard symbol known to have been transmitted on said first carrier;

generating a first error correction parameter based on the results of the comparing;

correcting the detected multi-carrier transmission signal in accordance with said first error correction parameter;

detecting symbol values for the remaining carriers of the corrected detected multi-carrier transmission signal;

comparing a detected symbol value at a second carrier to symbol values at said second carrier detected at others of said one or more antennas;

estimating a correctness of the detected symbol value based on said comparing to symbol values detected at other antennas; and

generating a second error correction parameter using the detected symbol value if it is estimated that the detected symbol value is correct.

7. A signal processor, said signal processor being configured to implement a process comprising:

compensating for channel characteristic impacts on information signals on a received multiple-tone transmission signal, wherein said compensating includes, in regard to the received signal,

detecting a symbol on a pilot tone selected from one of the multiple tones,

generating first error estimation using the detected symbol on the pilot tone,

generating a corrected symbol on others of said multiple tones using the received signal and the first error estimation,

selecting a subset of said others of said multiple tones as pseudo pilot tones,

generating a second error estimation using the selected pseudo pilot tones, and

generating an enhanced corrected symbol for said others of said multiple tones using the received signal and the second error estimation.

8. A signal processor, said signal processor being configured to perform processing of signals of a wireless communication system in which symbols are transmitted on a transmission carrier that includes a plurality of carrier tones, said processing including performing a method for compensating for channel effects on transmitted symbols, the method comprising:

generating a first error estimation with reference to a pilot tone in a received transmitted signal;

generating corrected symbols with reference to others of said plurality of carrier tones using the first error estimation;

selecting a subset of said transmission carriers as constituting pseudo pilot tones;

generating a refined error estimation using the generated corrected symbols corresponding to the selected pseudo pilot ones; and

correcting symbols on the plurality of carrier tones using the refined error estimation.

9. The signal processor of claim 8 , wherein the selecting the pseudo pilot tones comprises identifying, for a plurality of carrier tones, probability that a symbol detected from a carrier tone corresponds to the symbol transmitted on that carrier tone; and

when the identified probability exceeds a threshold, selecting that carrier tone as a pseudo pilot tone.

10. A signal processor, said signal processor being configured to implement a method for enhancing error processing in a multi-carrier signal transmission system, the method comprising:

receiving a plurality of symbols, each on a different carrier, wherein said plurality of symbols includes a reference symbol on first carrier;

generating a first error correction parameter using the received reference symbol;

correcting a remainder of the received plurality of symbols using said first error correction parameter;

determining a probability that a corrected received symbol has been accurately detected;

if the determined probability exceeds a first threshold, generating a second error correction parameter using a corresponding received symbol; and

correcting the remainder of the received plurality of symbols using said second error correction parameter.