Sökning: "MICAz"

Hittade 5 uppsatser innehållade ordet MICAz.

1. 1. An IEEE 802.15.4 Packet Error Classification Algorithm : Discriminating Between Multipath Fading and Attenuation and WLAN

   Master-uppsats, Mittuniversitetet/Avdelningen för informations- och kommunikationssystem

   Författare :Nan Chen; [2014]
   Nyckelord :WSN; error discrimination; MFA; WLAN interference; F-BER; RSSI; LQI; CC2420;

   Sammanfattning : In wireless sensor networks, communications are usually destroyed by signal attenuation, multipath fading and different kinds of interferences like WLAN and microwave oven interference. In order to build a stable wireless communication system, reactions like retransmission mechanisms are necessary. LÄS MER

3. 2. Performance evaluation of interleaving techniques for IEEE 802.15.4 transmissions

   Kandidat-uppsats, Mittuniversitetet/Avdelningen för informations- och kommunikationssystem

   Författare :Jiahuan Lei; Qingbi Liao; [2014]
   Nyckelord :interleaving; Matlab; Reed-Solomon; TinyOS; WSN; FEC; MicaZ;

   Sammanfattning : In the wireless sensor network, the WLAN interference, multi-path fading andattenuation are the main reason for packets’ corruption. Forward errorcorrection is one of the methods for error mitigation. Many coding methods aredesigned to improve the reliability of wireless channel. LÄS MER

4. 3. A TinyOS Testbed for CC2420 Transceivers

   Master-uppsats, Mittuniversitetet/Avdelningen för informations- och kommunikationssystem

   Författare :Muhammad Asif Jamal; [2013]
   Nyckelord :TinyOS; Motes; WSN; RSS; testbed; nesC; MICAz; MIB520; Handshaking; Frame length byte;

   Sammanfattning : Wireless Sensor Networks (WSNs) have gained significant consideration these days, as opposed to wired sensor networks, by introducing multi-functional wireless nodes, which are smaller in size. The main advan-tage is that its wireless, so it costs less to install, maintain and reconfig-ure. These sensor nodes are used in various application areas. LÄS MER

5. 4. Data acquisition of pressure and heart beat rate using TinyOS for e-health care application

   Kandidat-uppsats, Institutionen för informationsteknologi och medier

   Författare :Zhixian Bao; [2012]
   Nyckelord :Sensing; TinyOS 2.x; MDA300CA; E-health; Wireless sensor networks;

   Sammanfattning : The objective of the presented report focuses on the data acquisition of pressure and heart beat rates from external sensors over the TinyOS 2.x platform. This sensing application may be used in the e-health care field in order to sample the data information. LÄS MER

7. 5. Event Based Frequency Agile Mechanism For IEEE 802.15.4 Interference Avoidance

   Master-uppsats, JTH. Forskningsområde Robusta inbyggda system

   Författare :Khalid Obaid; [2011]
   Nyckelord :;

   Sammanfattning : Frequency hopping is one of the most successful solutions to the issues of interference and coexistence facing wireless devices that utilize the unlicensed 2.4GHz ISM band. LÄS MER