本文選題：水聲通信 + 正交頻分復(fù)用(OFDM)　； 參考：《電子與信息學(xué)報(bào)》2015年12期

【摘要】：該文在對正交頻分復(fù)用(OFDM)水聲通信速率最大化問題建模基礎(chǔ)上,對注水算法的運(yùn)算量進(jìn)行了合理簡化,實(shí)現(xiàn)了對子載波初始能量的快速分配。針對固定判決門限離散比特分配算法存在的碼元能量嚴(yán)重浪費(fèi)和速率損失問題,提出了基于貪婪的比特分配方案,以較小的計(jì)算量代價(jià)實(shí)現(xiàn)了OFDM通信速率的顯著提高。研究表明,在壓縮信道編碼的不完全信道估計(jì)下,新算法仍具有良好的通信速率及誤碼率性能,適用于時(shí)變水聲信道。
[Abstract]:On the basis of modeling the maximum rate of OFDM (orthogonal Frequency Division Multiplexing) underwater acoustic communication, this paper simplifies the calculation of the water injection algorithm and realizes the fast distribution of the initial energy of subcarriers. Aiming at the serious waste of symbol energy and rate loss in the fixed decision threshold discrete bit allocation algorithm, a greedy bit allocation scheme is proposed, which can significantly improve the OFDM communication rate at a small computational cost. The results show that the new algorithm still has good performance of communication rate and bit error rate under the incomplete channel estimation of compressed channel coding and is suitable for time-varying underwater acoustic channels.
【作者單位】： 海軍工程大學(xué)電子工程學(xué)院;海軍青島水警區(qū)后勤部艦艇教練室;
【基金】：國家自然科學(xué)基金(61101205)~~
【分類號】：TN929.3

【參考文獻(xiàn)】

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1 王巍;喬鋼;王s，

本文編號：1860537