發(fā)布時(shí)間：2018-05-08 22:26

  本文選題：OFDMA + 多跳中繼�。� 參考：《鐵道學(xué)報(bào)》2014年10期

【摘要】：OFDMA中繼網(wǎng)絡(luò)的頻譜規(guī)劃是解決小區(qū)內(nèi)全部資源如何分配給3種鏈路(直傳鏈路、基站到中繼站鏈路和中繼站到用戶鏈路)有效使用的問題�，F(xiàn)有的動(dòng)態(tài)頻譜規(guī)劃策略都是根據(jù)鏈路負(fù)載需求或干擾情況等,以提高系統(tǒng)吞吐量為目標(biāo)進(jìn)行頻譜規(guī)劃。本文針對OFDMA多跳中繼網(wǎng)絡(luò),綜合考慮用戶的速率需求、信道質(zhì)量和干擾情況,以能效為優(yōu)化目標(biāo)提出一種基于能效的動(dòng)態(tài)頻譜規(guī)劃策略�；趯�(shí)際系統(tǒng)中離散的自適應(yīng)調(diào)制編碼AMC(Adaptive Modulation and Coding Scheme)建立能效最優(yōu)化頻譜規(guī)劃模型,并采用最優(yōu)化理論中的整數(shù)規(guī)劃對模型進(jìn)行求解。仿真結(jié)果表明,基于能效的頻譜規(guī)劃策略在保證用戶速率需求的情況下可降低總發(fā)射能量,提高能量使用效率,并對用戶不均勻分布場景有較強(qiáng)的適應(yīng)性。
[Abstract]:The spectrum planning of OFDMA relay networks is an effective solution to how all resources in a cell can be allocated to 3 links (direct link, base station to relay station link and relay station to user link). The existing dynamic spectrum planning strategies are based on link load requirements or interference conditions to improve system throughput as the target. In this paper, a dynamic spectrum planning strategy based on energy efficiency is proposed for the OFDMA multi hop relay network, considering the user's rate requirements, channel quality and interference. Based on the adaptive modulation coding AMC (Adaptive Modulation and Coding Scheme) based on the actual system, the energy efficiency optimization is established. The spectrum planning model is used to solve the model with the integer programming in optimization theory. The simulation results show that the energy efficiency based spectrum planning strategy can reduce the total emission energy, improve the efficiency of the energy use and have a strong adaptability to the user's uneven distribution scenario.

【作者單位】： 西南交通大學(xué)信息編碼與傳輸四川省重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)(2012CB316100) 國家自然科學(xué)基金(61071108,61032002)
【分類號】：TN929.531
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本文編號：1863358