Iterative interference cancellation system and method
First Claim
1. An interference cancellation (IC) method in a communication system, comprising:
- receiving multi-paths of a signal; and
performing iterative interference cancellation to remove multi-path interference.
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Abstract
A system and method for Interference Cancellation (IC). One aspect relates to iterative interference cancellation with iterative finger delay adaptation. The interference cancellation method comprises receiving multi-paths of a signal; and performing iterative interference cancellation to remove multi-path interference, wherein the performing iterative IC comprises estimating a Signal-to-Interference-plus-Noise Ratio (SINR) at each of a plurality of pre-determined rake receiver finger delays, and performing successive Channel Estimation (CE) and IC on rake receiver fingers according to their estimated SINRs, and wherein the CE of a next finger does not start until interference of a previous finger is removed from a sample buffer. The method may further comprise improving estimated rake receiver finger delay, and each iteration decreases the amount of interference observed by each finger.
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Citations
29 Claims
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1. An interference cancellation (IC) method in a communication system, comprising:
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receiving multi-paths of a signal; and
performing iterative interference cancellation to remove multi-path interference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An interference cancellation (IC) apparatus comprising:
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a receiver configured to receive multi-paths of a signal; and
a module configured to perform iterative interference cancellation to remove multi-path interference. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A base station comprising:
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a memory configured to store samples of multi-paths of signals received from a plurality of access terminals;
a demodulator configured to demodulate the stored samples using a first code sequence corresponding to a first access terminal;
a decoder configured to decode data from the demodulated samples;
a reconstruction unit configured to use decoded data to reconstruct encoded and modulated samples of the multi-paths; and
an iterative interference cancellation unit configured to remove reconstructed samples of the multi-paths from the samples stored in the memory. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification