Pulse or digital communications – Transmitters
Reexamination Certificate
2008-06-18
2011-11-08
Payne, David C. (Department: 2611)
Pulse or digital communications
Transmitters
C705S026640
Reexamination Certificate
active
08054909
ABSTRACT:
The present invention relates to a method of detecting a candidate vector and a method of detecting a transmission symbol using the same. According to an embodiment of the present invention, in a multiple input multiple output (MIMO) system using spatial multiplexing (SM), a receiver selects candidate vectors corresponding to a layer located at a last row among a plurality of rearranged layers, and sequentially ranks constellation dots of a next layer for each of the selected candidate vectors. Then, a plurality of arbitrary constellation dots are selected from the ranked constellation dots, accumulated costs of the arbitrary constellation dots are calculated, and a candidate vector is selected in correspondence with a constellation dot having a minimal accumulated cost. Then, a new arbitrary constellation dot is selected in place of the constellation dot selected as the candidate vector, an accumulated cost of the selected arbitrary constellation dot is compared with accumulated costs of the other arbitrary constellation dots, and another candidate vector is selected.
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Kim et al., Mitigating Error Propagation in Successive Interference Cancellation, Oct. 2006, pp. 2956-2960, IEICE, Trans. Commun., vol. E89-B, No. 10.
Bahng Seung Jae
Bang Young Jo
Choi Jung Pil
Heo Hoon
Kim Jae Kwon
Electronics and Telecommunications Research Institute
File Erin
Jefferson IP Law, LLP
Payne David C.
Samsung Electronics Co,. Ltd
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