Investigation on Transmit and Receiver Diversity Gains Considering Channel Estimation Error for Uplink DFT-Precoded OFDMA
Transmit diversity associated with receiver diversity is very effective in improving the bit error rate or block error rate (BLER) performance as a Rank-1 transmission scheme. However, it is not easy to rely on theoretical analysis to analyze transmit and receiver diversity gains considering channel coding, frequency diversity through a wider transmission bandwidth, and channel estimation error in Discrete Fourier Transform (DFT)-precoded Orthogonal Frequency Division Multiple Access (OFDMA) using a frequency domain equalizer (FDE). Therefore, this paper investigates the gains of transmit diversity and receiver diversity considering channel estimation error for uplink DFT-precoded OFDMA. More specifically, we clarify the gains from open-loop (OL) transmit diversity using space-time block code (STBC) based coding and closed-loop (CL) transmit diversity with codebook based precoding at a set of user equipment (UE) assuming receiver diversity with the maximum of 12 antennas at a base station (BS) based on link-level computer simulations. Then, we clarify the numbers of transmit and receiver diversity branches, which provide distinct gains in terms of the BLER improvement.
transmit diversity receiver diversity channel estimation DFT-precoded OFDMA
Lianjun Deng Teruo Kawamura Hidekazu Taoka Mamoru Sawahashi
Department of Information Network Engineering, Tokyo City University Radio Access Network Development Department, NTT DOCOMO, INC. DOCOMO Communications Laboratories Europe GmbH
国际会议
南京
英文
1-5
2011-11-09（万方平台首次上网日期，不代表论文的发表时间）