We claim:
1. A method for separating sucrose and a second dissolved component from a beet-derived sucrose-containing solution comprising:
fractionating the solution by a chromatographic simulated moving bed process to yield a sucrose-enriched fraction and a fraction enriched with the second dissolved component, wherein sucrose and the second dissolved component are enriched either in the same fraction or in different fractions; and
fractionating by chromatographic separation the fraction enriched with the second component to yield a second sucrose-enriched fraction and a separate fraction enriched with the second dissolved component.
2. The method of claim 1 wherein the sucrose-enriched fraction and the fraction enriched with the second dissolved component are separate fractions that are recovered in the first fractionation.
3. The method of claim 2 wherein the second sucrose-enriched fraction is combined with the sucrose fraction from the first chromatographic fractionation, and sucrose is recovered from the combined sucrose fraction thus obtained.
4. The method of claim 2 wherein the second sucrose-enriched fraction is returned to the feed solution for the first chromatographic fractionation, and sucrose is recovered from the sucrose-enriched fraction obtained from the first fractionation.
5. The method of claim 1 wherein the second dissolved component is selected from the group consisting of betaine, inositol, raffinose, galactinol, serine and other amino acids.
6. The method of claim 5 wherein the second dissolved component is betaine.
7. The method of claim 1 wherein the simulated moving bed process is a continuous simulated moving bed process.
8. The method of claim 1 wherein the simulated moving bed process is a sequential simulated moving bed process.
9. The method of claim 1 wherein the second fractionation is performed by a batch method.
10. The method of claim 1 wherein the second fractionation is performed by a continuous simulated moving bed process.
11. The method of claim 1 wherein the second fractionation is performed by a sequential simulated moving bed process.
12. The method of claim 1 wherein the beet-derived sucrose-containing solution is beet molasses.
13. The method of claim 1 wherein the chromatographic fractionation is performed with a strong cation exchanger.
14. The method of claim 13 wherein the cation exchanger is a polystyrene-based cation exchanger cross-linked with divinylbenzene and has a divinylbenzene content of 4-8%.
15. The method of claim 13 or 14 wherein the cation exchanger is predominantly in sodium andor potassium form.
16. The method of claim 1 wherein the dry solids content of the solution fed to the second fractionation is adjusted.
17. The method of claim 1 wherein the pH of the solution fed to the second fractionation is adjusted to the range of about 6.5-12.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of channel estimation comprising:
a first phase of locating an optimum regularisation parameters range from an initially larger range; and
a second phase of obtaining optimum channel estimates from a Tikhonov regularized least squares solution using the optimum regularisation parameters range located from the first phase.
2. A method according to claim 1 wherein the Tikhonov regularized least squares solution is used for the next Orthogonal Frequency Division Multiplexing (OFDM) blocks.
3. A method according to claim 2 wherein the Tikhonov regularised least squares solution is used for the next OFDM blocks only if a channel impulse response length remains unchanged.
4. A method according to claim 3 wherein an estimate of the channel impulse response length is 16 or 18.
5. A method according to claim 1 wherein in the first phase, the optimum regularization parameter range is estimated from the initially larger range.
6. A method according to claim 1 wherein in the second phase the optimum regularization parameter range from the first phase is used in the computation of the best channel estimate by singular value decomposition (SVD) implemented Tikhonov regularised least square solution (LS_TikSVD).
7. A method according to claim 6 wherein a modified LS channel estimation is provided by applying singular value decomposition implementation of Tikhonov regularization.
8. A method according to claim 1 wherein the optimum regularisation parameters range is unchanged while a channel tap length is constant.
9. A method according to claim 1 wherein performance increases are achieved in either or both of the mean square error (MSE) of channel estimation andor bit error rate (BER) performance of a system in comparison to a conventional Least Square (LS) channel estimator.
10. A method according to claim 1 wherein a linear problem is solved using an LS_TikSVD algorithm.
11. A method according to claim 10 wherein a Tikhonov Filtering method with respect to the LS_TikSVD algorithm is performed.
12. A method according to claim 1 wherein the method of channel estimation is utilised by a broadcast data receiver.
13. A method according to claim 12 wherein the broadcast data receiver is provided to receive broadcast digital data fro one or more digital data transmitting locations and processing at least selected portions of said received digital data in response to a user request to generate video andor audio andor auxiliary services therefrom.