发明名称 |
SIGNAL MODULATION AND DEMODULATION FOR MULTIUSER SUPERPOSITION TRANSMISSION SCHEME |
摘要 |
A method of modulating and demodulating superposed signals for MUST scheme is proposed. A transmitter takes bit sequences intended for multiple receivers under MUST scheme to go through a "bit sequence to constellation points" mapper before entering the modulators to satisfy the Gray coding rule and to achieve high demodulation performance for the receivers. In a first method, each bit sequence is assigned for each constellation point on the constellation map to satisfy one or more conditions under different power split factors. In a second method, the constellation map is divided into sub-regions according to the clustering of the constellation points for bit sequence assignment. A near-UE may use an ML receiver for demodulation and decoding the superposed signal. A far-UE may use an ML receiver or an MMSE receiver for demodulation and decoding the superposed signal. |
申请公布号 |
WO2017028763(A1) |
申请公布日期 |
2017.02.23 |
申请号 |
WO2016CN95226 |
申请日期 |
2016.08.15 |
申请人 |
MEDIATEK INC. |
发明人 |
HWANG, Chien-Hwa;LIAO, Yi-Ju;YU, Tsang-Wei;TSAI, Lung-Sheng;LIAO, Pei-Kai |
分类号 |
H04L1/00 |
主分类号 |
H04L1/00 |
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