Apparatus and method for processing signal in wireless communication system
AssigneesSamsung Electronics Co., Ltd., Postech Academy-Industry Foundation
InventorsSeok-Ki Ahn, Kyeongcheol Yang, Daeyeol Yang, Sunghye Cho
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Abstract
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication systems such as Long Term Evolution (LTE). A method for operating a receiver in a wireless communication system may include: receiving a signal from a transmitter; performing Integer Forcing (IF) equalization on the received signal; determining a log LikeLihood Ratio (LLR) value of each bit by using a posteriori probability of each bit for the signal determined based on an equalization matrix and a likelihood value for the signal; and decoding the signal by using the LLR value.
Claims18
A method for operating a device in a wireless communication system, the method comprising:
- applying an integer forcing (IF) equalization to a received signal to obtain an equalized signal;
- determining a log likelihood ratio (LLR) value of a bit in a symbol of the equalized signal based on a posteriori probability (APP) of other bits in the symbol of the equalized signal and a likelihood function for the equalized signal;
- obtaining the symbol of the equalized signal based on LLR values of a plurality of bits in the symbol of the equalized signal including the LLR value of the bit;
- and
- obtaining a symbol of the received signal from the symbol of the equalized signal.
A device in a wireless communication system, the device comprising:
- a transceiver;
- and
- at least one processor operatively coupled with the transceiver,
- wherein the at least one processor is configured to control to:
- apply an integer forcing (IF) equalization to a received signal to obtain an equalized signal,
- determine a log likelihood ratio (LLR) value of a bit in a symbol of the equalized signal based on a posteriori probability (APP) of other bits in the symbol of the equalized signal and a likelihood function for the equalized signal,
- obtain the symbol of the equalized signal based on LLR values of a plurality of bits in the symbol of the equalized signal including the LLR value of the bit, and
- obtain a symbol of the received signal from the symbol of the equalized signal.
Dependencies are inferred from the claim text.