| Summary: | 碩士 === 國立清華大學 === 電機工程學系 === 103 === In recent years, due to the transmission data rates and growing link quality demand,
researchers develop new transmission technologies to achieve high data throughputs
and spectral eciency, such as multiple-input-multiple-output (MIMO) systems that is
widely used in wireless communication. However, the energy eciency is always not
taken into consideration. In traditional MIMO system, The energy eciency decreases
linearly with the number of active antennas (RF chains). In order to increase energy
eciency in wireless communication, the researcher proposes Spatial Modulation (SM)
that is a emerging and recently developed multiple-antenna transmission technique.
The main concept of SM is that using one active antenna to transmit signal in largescale
MIMO communications. Therefore, SM can achieve to reduce the number of
RF chain and increase energy eciency, such as Single-Input- Single-Output (SISO)
system. Beside, SM can improve transmission date rates compared to Single-Input-
Single-Output (SISO) system. This is because there are addition bits to be mapped
into antenna index. Nowadays, the researcher has been developed the large-scale MIMO
system. Therefore, the more the number of antenna at transmit, the higher data rates.
In addition, if the system at the same time has more than two active antennas to
transmit signals, which is termed as SM-MIMO. It can achieve higher transmission data
rates than SM system. In this thesis, we mainly SM-MIMO with two active antennas
and propose a joint subset channel concept and pre-processing each joint subset channel
to reduce the computational complexity of detector.
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