Title :
An energy efficient source coding and modulation scheme for wireless sensor networks
Author :
Kim, Jaeweon ; Andrews, Jefrq G.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
A direct sequence code division multiple access (DS-CDMA) system combined with modified minimum energy (MME) coding is proposed and analyzed. The MME coding improves energy savings and error performance of minimum energy (ME) coding by partitioning a codeword into several subframes and using indicator bits. The results show that the proposed system clearly outperforms DS-CDMA systems with or without ME coding in terms of energy consumption and bit error rate. This indicates that combining MME coding and DS-CDMA is an attractive choice for wireless sensor networks.
Keywords :
code division multiple access; error statistics; modulation coding; source coding; spread spectrum communication; wireless sensor networks; DS-CDMA system; MME; bit error rate; codeword; direct sequence code division multiple access; energy consumption; error performance; modified minimum energy coding; modulation scheme; source coding; wireless sensor network; Bit error rate; Circuits; Energy consumption; Energy efficiency; Modulation coding; Multiaccess communication; Multiple access interference; Source coding; Spread spectrum communication; Wireless sensor networks;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on
Print_ISBN :
0-7803-8867-4
DOI :
10.1109/SPAWC.2005.1506232
