同信道干擾條件下的多天線放大轉(zhuǎn)發(fā)中繼中斷概率分析
doi: 10.11999/JEIT140141 cstr: 32379.14.JEIT140141
基金項(xiàng)目:
國(guó)家自然科學(xué)基金(61231011, 61271255)，江蘇省自然科學(xué)基金(BK20131068)和東南大學(xué)移動(dòng)通信國(guó)家重點(diǎn)實(shí)驗(yàn)室開放研究基金(2012D15)資助課題
Outage Probability Analysis of Dual-hop MIMO Amplify-and-forwardRelaying with Multiple Co-channel Interferences
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摘要: 該文研究了基于波束形成技術(shù)的雙跳多輸入多輸出(MIMO)放大轉(zhuǎn)發(fā)(AF)中繼系統(tǒng)的中斷概率，該系統(tǒng)在發(fā)射端、中繼端和接收端都配置了多根天線。假設(shè)每條鏈路的發(fā)射端采用最大比傳輸(MRT)技術(shù)，接收端采用最大合并比(MRC)技術(shù)，該文得出了中繼端受到同信道干擾時(shí)的信干噪比(SINR)，推導(dǎo)了基于固定增益中繼方案的中斷概率(OP)閉合表達(dá)式。計(jì)算機(jī)仿真結(jié)果不僅驗(yàn)證了性能分析的有效性，而且還分析了關(guān)鍵參數(shù)對(duì)系統(tǒng)性能的影響以及配置多天線帶來(lái)的好處。
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關(guān)鍵詞:
- 無(wú)線通信 /
- 放大轉(zhuǎn)發(fā)中繼 /
- 多輸入多輸出 /
- 同信道干擾 /
- 中斷概率
Abstract: The outage probability of a dual-hop MIMO Amplify-and-Forward (AF) relay network with beamforming technique is investigated, where the source, relay and destination are all equipped with multiple antennas. By supposing that the Maximal-Ratio-Transmission (MRT) and Maximal-Ratio-Combining (MRC) are applied at the transmitter and receiver of each hop, the output Signal-to-Interference-plus-Noise Ratio (SINR) of the dual-hop AF relay system with multiple Co-Channel Interferences (CCIs) and noise at the relay is obtained, and the new closed-form expression of Outage Probability (OP) is derived for the fixed-gain relaying system. The computer simulation results show the effectiveness of the performance analysis; meanwhile, the results are able to provide valuable insights on the effects of key parameters on the performance of the dual-hop AF relaying system, as well as the benefit of implementing multiple antennas. -
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