基于多用戶檢測的Ad hoc網(wǎng)絡(luò)吞吐量研究
Throughput Study for Ad hoc Network with Multiuser Detection
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摘要: 對(duì)于基于CDMA的移動(dòng)Ad hoc網(wǎng)絡(luò)，傳統(tǒng)方案下其終端對(duì)接收到的數(shù)據(jù)用匹配濾波器進(jìn)行檢測，該文則將多用戶檢測器引入到Ad hoc網(wǎng)絡(luò)的終端中，通過抑制多址干擾來提高網(wǎng)絡(luò)的整體性能?；谌B接有限元模型，并在介質(zhì)訪問子層采用時(shí)隙ALOHA協(xié)議的基礎(chǔ)上，詳細(xì)推導(dǎo)了Ad hoc網(wǎng)絡(luò)的吞吐量。理論分析和實(shí)驗(yàn)仿真都說明多用戶檢測可以顯著地提高Ad hoc網(wǎng)絡(luò)的吞吐量。
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關(guān)鍵詞:
- Ad hoc網(wǎng)絡(luò);多用戶檢測;吞吐量;干擾抑制
Abstract: The importance of multiuser detection for CDMA-based mobile Ad hoc network is addressed in this paper. Different from conventional scheme, each terminal of the Ad hoc network in this paper is equipped with an adaptive blind linear multiuser detector. Employing slotted-Aloha protocol in MAC layer, and following full-connected network model, the throughput of Ad hoc network is studied. Theoretic analysis and simulation results show that multiuser detection can remarkably improve throughput performance of Ad hoc network. -
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