Patent ID: 8023486
Filing Date: 2011-09-20
Classification: H04B,H04L

Abstract:
1. A multi-cell joint detection method for, a slot code divisional multiple access (CDMA) system which performs joint detection by using structure information of multiple intra-frequency neighboring cells, comprising steps of: obtaining a channel estimation result of each neighboring cell by using multiple code set channel estimation method; selecting at least one grouping method from predetermined code channel grouping methods and grouping code channels of each neighboring cell; performing the joint detection based on the channel estimation result of each neighboring cell and a code channel grouping result so as to obtain a joint detection result; wherein the at least one grouping method selected is based on a respective cell and the grouping code channels of each neighboring cell comprises: grouping code channels of a same cell into one group, the number of groups is the same as the number of intra-frequency cells, wherein said performing the joint detection adopts the single cell block linear equalizer method in each of the groups and adopts the interference cancellation method between the groups, and said performing the joint detection further comprises steps of: performing single cell joint detection for each of the groups, obtaining detection result for each of the groups and then determining whether iterative times are reached; if yes, outputting a joint detection result of a group which a user to be detected belongs to; otherwise, recovering interference components introduced by each group signal response based on the joint detection result of each of the groups; cancelling interference components that don't belong to a current group from a received signal and obtaining a net signal of each of the group; and taking the net signal as a grouping result for next processing and then proceeding to the step of performing the single cell joint detection.