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For the limitation of resource and the requirement of environment, energy-efficient OFDMA systems gradually play an important role in wireless communication. In this paper, we present a novel resource allocation algorithm for downlink energy-efficient OFDMA systems, under the given QoS requirement and power limitation constraints. Compared with the existing works, we propose a sub carrier and power...
Channel quality indication (CQI) report is an important element of LTE and has significant impact on the system performance. The encoding method for CQI in 3GPP-LTE is Reed-Muller (RM) code and the transmission quality of CQI can be improved by channel coding with RM code. On the receiver, the contradiction between low latency which is one of goals of LTE and reliability of communication system can...
MIMO-OFDM technique is considered as a core technology in B3G/4G. However, a quickly and accurate channel estimation is the key to realize MIMO-OFDM. At first we introduce the MIMO, OFDM and the combination. Then introduce the MIMO-OFDM channel estimation techniques. The methods of channel estimation in MIMO-OFDM are stated. Last, we construct a simulation environment at MATLAB and simulate MIMO-OFDM...
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