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preamble

This is GPS Matlab findpreambles finds the first preamble occurrence in the bit stream of each ch

This is GPS Matlab findpreambles finds the first preamble occurrence in the bit stream of each channel. The preamble is verified by check of the spacing between preambles [6sec] and parity checking of the first two words in a subframe. At the same time function returns list of channels, that are in tracking state and with valid preambles in the nav data stream.

標(biāo)簽： findpreambles occurrence the preamble

上傳時(shí)間： 2013-12-23

上傳用戶(hù)：秦莞爾w
WLAN仿真－系統(tǒng)參數(shù)配置系統(tǒng)參數(shù)主要分為2類(lèi)：一類(lèi)是可以配置的

WLAN仿真－系統(tǒng)參數(shù)配置系統(tǒng)參數(shù)主要分為2類(lèi)：一類(lèi)是可以配置的，可以根據(jù)使用者的需求改變的參數(shù) 1）你打算讓這個(gè)仿真跑多少個(gè)OFDM符號(hào)？ 2）你打算采用什么樣的調(diào)制方式？ 3）你打算讓你的系統(tǒng)跑在什么樣的環(huán)境下，AWGN？Rayleigh fading? 4）你的接收端采用什么樣的配置，比如，是否采用理想均衡，線性插值均衡，理想同步，頻偏糾正等等？ 5）你的信道采樣頻率是多少？你的載波頻率是多少？一類(lèi)是固定不變的，發(fā)送端按照協(xié)議規(guī)定設(shè)置的一些參數(shù) 1）子載波個(gè)數(shù)，包括數(shù)據(jù)子載波，導(dǎo)頻子載波。 2）保護(hù)間隔，pilot和preamble的數(shù)值。舉例：比如將這些參數(shù)匯總在一個(gè)m文件，global_parameter.m

標(biāo)簽： WLAN 參數(shù) 仿真

上傳時(shí)間： 2016-11-09

上傳用戶(hù)：aeiouetla
WLAN仿真－發(fā)送機(jī) wlan No Comments 設(shè)置完系統(tǒng)參數(shù)后

WLAN仿真－發(fā)送機(jī) wlan No Comments 設(shè)置完系統(tǒng)參數(shù)后，開(kāi)始產(chǎn)生發(fā)送數(shù)據(jù)。 1. 產(chǎn)生隨機(jī)的發(fā)送bit（tx_bits），這里不考慮信道編碼。 2. QAM映射 3. 將數(shù)據(jù)映射到不同載波，形成OFDM符號(hào) 4. 產(chǎn)生pilot，并將pilot插入OFDM符號(hào)中 5. 加入dc和guard子載波 6. 進(jìn)行ifft，將頻域信號(hào)變到時(shí)域，并加入循環(huán)前綴 7. 對(duì)信號(hào)進(jìn)行overlap window 8. 在時(shí)域產(chǎn)生short preamble 9. 在時(shí)域產(chǎn)生long preamble 10. 將preamble和數(shù)據(jù)符號(hào)組成packet 11. 升采樣得到信道傳輸?shù)臄?shù)據(jù)Tx_signal_up 具體程序見(jiàn)附件 wlan_transmitter.m

標(biāo)簽： Comments WLAN wlan No

上傳時(shí)間： 2016-11-09

上傳用戶(hù)：exxxds
$Header: /cvsroot/nsnam/ns-2/mac/mac-tdma.cc,v 1.16 2006/02/22 13:25:43 mahrenho Exp $ // // mac-t

$Header: /cvsroot/nsnam/ns-2/mac/mac-tdma.cc,v 1.16 2006/02/22 13:25:43 mahrenho Exp $ // // mac-tdma.cc // // preamble TDMA MAC layer for single hop. // Centralized slot assignment computing.

標(biāo)簽： mac-tdma mahrenho cvsroot Header

上傳時(shí)間： 2013-12-16

上傳用戶(hù)：dave520l
WiseMAC is a medium access control protocol designed for the WiseNETTMwireless sensor network. It i

WiseMAC is a medium access control protocol designed for the WiseNETTMwireless sensor network. It is based on CSMA and uses the preamble sampling technique to minimize the power consumed when listening to an idle medium.

標(biāo)簽： WiseNETTMwireless designed protocol WiseMAC

上傳時(shí)間： 2014-01-20

上傳用戶(hù)：x4587
X-MAC, a low power MAC protocol for wireless sensor networks (WSNs). Standard MAC protocols develo

X-MAC, a low power MAC protocol for wireless sensor networks (WSNs). Standard MAC protocols developed for duty-cycled WSNs such as BMAC, which is the default MAC protocol for TinyOS, employ an extended preamble and preamble sampling.

標(biāo)簽： MAC protocols Standard networks

上傳時(shí)間： 2014-01-13

上傳用戶(hù)：王楚楚

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preamble

This is GPS Matlab findpreambles finds the first preamble occurrence in the bit stream of each ch

WLAN仿真－系統(tǒng)參數(shù)配置系統(tǒng)參數(shù)主要分為2類(lèi)：一類(lèi)是可以配置的

WLAN仿真－發(fā)送機(jī) wlan No Comments 設(shè)置完系統(tǒng)參數(shù)后

$Header: /cvsroot/nsnam/ns-2/mac/mac-tdma.cc,v 1.16 2006/02/22 13:25:43 mahrenho Exp $ // // mac-t

WiseMAC is a medium access control protocol designed for the WiseNETTMwireless sensor network. It i

X-MAC, a low power MAC protocol for wireless sensor networks (WSNs). Standard MAC protocols develo