Method and apparatus for estimating signal weighting parameters in a receiver
First Claim
1. In a communication system having a transmitter and a receiver, the transmitter transmitting a signal having undergone encoding at the transmitter, the signal having data contained within the signal, a method of estimating signal weighting parameters in the receiver, the method comprising the steps of:
- receiving the encoded signal;
generating a first signal weighting parameter related to the received encoded signal;
modifying the received encoded signal with said first generated signal weighting parameter;
decoding the modified received encoded signal to produce a first decoded signal;
re-encoding the first decoded signal to produce a re-encoded signal; and
generating a second signal weighting parameter related to said re-encoded signal.
2 Assignments
0 Petitions
Accused Products
Abstract
A receiver (100) has improved signal weighting parameter estimation. The receiver receives a signal (101) having encoded data. A decision circuit (106) is coupled to the received encoded data to generate a first signal weighting parameter which is used to modify the received encoded data. The modified data is then decoded to output the decoded data. The decoded data output is then re-encoded using a technique similar to that used by the transmitter. The re-encoded data is then used to calculate a second signal weighting parameter which, in turn, is used to modify a stored replica of signal (101). The modified version of the stored replica is then decoded to yield a more accurate estimate of the information contained within the signal (101) at a receiver (100).
40 Citations
35 Claims
-
1. In a communication system having a transmitter and a receiver, the transmitter transmitting a signal having undergone encoding at the transmitter, the signal having data contained within the signal, a method of estimating signal weighting parameters in the receiver, the method comprising the steps of:
-
receiving the encoded signal; generating a first signal weighting parameter related to the received encoded signal; modifying the received encoded signal with said first generated signal weighting parameter; decoding the modified received encoded signal to produce a first decoded signal; re-encoding the first decoded signal to produce a re-encoded signal; and generating a second signal weighting parameter related to said re-encoded signal. - View Dependent Claims (2, 3)
-
-
4. In a communication system having a transmitter and a receiver, the transmitter transmitting a signal having undergone encoding at the transmitter, a method of estimating signal weighting parameters in a receiver, the method comprising the steps of:
-
receiving the encoded signal; transforming said received encoded signal into a received encoded vector representing the encoded signal; generating a first signal parameter related to the received encoded vector; modifying said received encoded vector with said first signal weighting parameter; decoding said modified received encoded vector to produce a first decoded received vector; re-encoding said first decoded received vector to produce a re-encoded received vector; generating a second signal weighting parameter related to the re-encoded received vector; modifying a stored replica of said received encoded vector with said second signal weighting parameter; and decoding said modified stored replica of said received encoded vector to produce a second decoded received vector. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method of signal estimation in a receiver, the receiver having received a signal from a transmitter, the receiver weighting the signal by calculating soft-decision weighting parameters in response to the received signal, the method comprising the steps of:
-
transforming the received signal into a received vector representing the received signal; calculating a first error signal between said received transformed vector and a predetermined vector which represents an ideally transmitted signal; modifying said received transformed vector with a first soft-decision weighting parameter generated based on said first error signal; decoding said modified received vector to produce a first decoded received vector; re-encoding said first decoded received vector to produce a first re-encoded received vector; calculating a second error signal between said re-encoded received vector and said received signal; modifying the received signal with a second soft-decision weighting parameter generated based on said second error signal to produce a modified received signal; and decoding said modified received signal to produce a second decoded received vector. - View Dependent Claims (15, 16, 17, 18)
-
-
19. In a communication system having a transmitter and a receiver, the transmitter transmitting a signal having data contained therein, the receiver having a limited amount of information about the data, a method of estimating signal weighting parameters in the receiver, the method comprising the steps of:
-
receiving the signal; generating a first signal weighting parameter related to the received signal; modifying the received signal with said first generated signal weighting parameter related to the received signal; decoding the modified received signal to produce a first decoded signal; re-encoding the first decoded signal; generating a second signal weighting parameter related to the signal utilizing said re-encoded signal; modifying the received signal with said second generated signal weighting parameter; and re-decoding the modified received signal modified with said second generated signal weighting parameter to produce a second decoded signal having additional information about data contained within the signal. - View Dependent Claims (20, 21, 22, 23, 24, 25)
-
-
26. An apparatus for estimating signal weighting parameters in a receiver, the apparatus comprising:
-
means for receiving an encoded signal transmitted from a transmitter; first means, coupled to said means for receiving, for making signal weighting parameter decisions based on said received encoded signal; means, coupled to said means for making decisions, for decoding said received signal based on said signal weighting parameter decisions; means, coupled to said means for decoding, for re-encoding said decoded received signal; and second means, coupled to said means for re-encoding and said received encoded signal, for making signal weighting parameter decisions based on said re-encoded received encoded signal. - View Dependent Claims (27, 28, 29)
-
-
30. A receiver for estimating signal weighting parameters, the receiver employed in a slow-frequency hopping (SFH) communication system, the receiver comprising:
-
means for receiving a frequency-hopped signal transmitted from a transmitter; first means, coupled to said means for receiving, for making signal weighting parameter decisions based on said received frequency-hopped signal; means, coupled to said means for making decisions, for decoding said received frequency-hopped signal based on said signal weighting parameter decisions, means, coupled to said means for decoding, for re-encoding said decoded received frequency-hopped signal; and second means, coupled to said means for re-encoding and said received frequency-hopped signal, for making signal weighting parameter decisions based on said re-encoded received frequency-hopped signal. - View Dependent Claims (31)
-
-
32. A receiver for estimating signal weighting parameters, the receiver employed in a time-division multiple access (TDMA) communication system, the receiver comprising:
-
means for receiving an encoded signal, transmitted from a transmitter, during a first TDMA timeslot; first means, coupled to said means for receiving, for making signal weighting parameter decisions based on said received encoded signal; means, coupled to said means for making decisions, for decoding said received encoded signal based on said signal weighting parameter decisions; means, coupled to said means for decoding, for re-encoding said decoded received encoded signal; and second means, coupled to said means for re-encoding and said received encoded signal, for making signal weighting parameter decisions based on said re-encoded received encoded signal. - View Dependent Claims (33, 34, 35)
-
Specification