On - demand synchronization cdmaa new multiple access protocol for the mobile ad hoc network 一種新的移動(dòng)ad hoc網(wǎng)絡(luò)的按需同步碼分多址協(xié)議
When multiple tags are transmitting data simultaneity within reader ' s scope , that will occurs a collision . in order to resole this problem , we must use multiple access protocols 在射頻識別系統(tǒng)中的閱讀器作用范圍內(nèi),有多個(gè)應(yīng)答器應(yīng)答要求通信而發(fā)生碰撞問題。
In this dissertation , multiple access protocols for integr ' ation of voice and data in conununication networks are investigated . and detai1ed introduction and simulation to integration of voice and data in hfc / catv network is made 隨著寬帶業(yè)務(wù)的提出,多址接入?yún)f(xié)議不能僅僅停留在傳統(tǒng)的數(shù)據(jù)通信網(wǎng)的多址接入?yún)f(xié)議上,而必須考慮綜合業(yè)務(wù)的接入。
The research work in this dissertation carries a deep study on new techniques of prn and put emphasis on the multiple access protocol to support the integration of smart antennas with prn . the major achievements are outlined as follow 近年來,諸多新的應(yīng)用對分組無線網(wǎng)的研究和發(fā)展不斷提出新的挑戰(zhàn);另一方面,通信和微電子技術(shù)的迅速發(fā)展又為分組無線網(wǎng)的發(fā)展創(chuàng)造了良好的契機(jī)。
Several kind of typical mac protocols in access network were analyzed . investigating and comparing the characteristics among tdma 、 wdma 、 cdma ; random multiple access protocols such as aloha were analyzed ; slotted aloha - cdma multiple access protocol was analyzed too 分析了以aloha協(xié)議為代表的隨機(jī)多址接入?yún)f(xié)議的特點(diǎn),以及固定與隨機(jī)相結(jié)合的時(shí)隙aloha - cdma多址接入?yún)f(xié)議的特點(diǎn)。
Thus it decreases the collision and then improves the performance of the network . simulation results show that fa _ maca outperforms several known multiple access protocols using traditional network access delay algorithms 該協(xié)議在原有maca協(xié)議的基礎(chǔ)上,考慮了網(wǎng)絡(luò)中不同優(yōu)先級業(yè)務(wù)對接入時(shí)延的要求,并且可以根據(jù)網(wǎng)絡(luò)當(dāng)前的業(yè)務(wù)負(fù)荷動(dòng)態(tài)的選擇控制參數(shù),從而從整體上改善了網(wǎng)絡(luò)的性能。
Chapter 2 studies the approach to employ smart antennas in mobile ad hoc network ( manet ) nodes . the research status of mobile smart antennas ( or handheld smart antennas ) is reviewed , and the effection of smart antennas on the performance of multiple access protocol is discussed 本文的主要內(nèi)容和貢獻(xiàn)包括以下幾個(gè)方面:第二章對智能天線(自適應(yīng)波束形成天線)在移動(dòng)adhoc網(wǎng)絡(luò)( manet )中的應(yīng)用進(jìn)行了具體、深入的研究。