Signaling in wireless communication systems
AssigneeKorea Advanced Institute of Science and Technology
InventorBang Chul Jung
Life of this patent
Estimating the term…
Abstract
A communication device includes an RF receiver that receives a combined signal including a first signal transmitted from a first node and a second signal transmitted from a second node, a channel estimator that estimates first channel information of the first signal and second channel information of the second signal, respectively, a multiuser detector that detects original signal values of the combined signal using the estimated first and second channel information and an RF transmitter that transmits a signal generated based on the values detected by the multiuser detector to the first node and the second node during a predetermined period.
Claims19
A communication device comprising:
- an RF receiver that receives a combined signal including a first signal transmitted from a first node and a second signal transmitted from a second node;
- a channel estimator that estimates first channel information of the first signal using a first pilot signal and estimates second channel information of the second signal using a second pilot signal;
- a multiuser detector that detects original signal values of the combined signal using the estimated first and second channel information;
- an RF transmitter that transmits a third signal generated based on the detected original signal values to the first node and the second node during a predetermined period;
- a decoder that decodes a vector composed of the original signal values detected by the multiuser detector using a first channel code;
- and
- an encoder that encodes the decoded vector using a second channel code.
A communication device comprising:
- an RF receiver for receiving a combined signal including a first signal transmitted from a first node and a second signal transmitted from a second node;
- a channel estimator for estimating first channel information of the first signal and estimating second channel information of the second signal;
- a multiuser detector for detecting, from the combined signal, values of the first signal using the estimated first channel information, and detecting, from the combined signal, values of the second signal using the estimated second channel information, the values of the second signal being determined separately from the values of the first signal;
- an XOR (exclusive-or) operator for performing an XOR-operation on the values of the first signal and the values of the second signal;
- and
- an RF transmitter for transmitting a third signal generated based on the XOR-operation to the first node and the second node during a predetermined period.
A communication method comprising:
- receiving a combined signal including a first signal and a second signal transmitted substantially simultaneously from different nodes;
- estimating first channel information of the first signal and second channel information of the second signal;
- detecting original signal values of the first signal from the combined signal based on the estimated first channel information, and detecting original signal values of the second signal from the combined signal based on the estimated second channel information, wherein the original signal values of the first signal and the second signal are independently detected by a multiuser detecting method;
- performing an XOR (exclusive-or)-operation on the detected values of the first signal and the detected values of the second signal;
- and
- transmitting a third signal generated based on the XOR- operation to the first and second nodes during a predetermined period.
Dependencies are inferred from the claim text.