Can I read Adaptive time synchronization for VHT wireless LAN on EtoBox?

Adaptive time synchronization for VHT wireless LAN by Nanda Kishore Chavali; Venkata Krishna Reddy Pilli is a scholarly article available to read on EtoBox.

What is Adaptive time synchronization for VHT wireless LAN about?

IEEE 802.11ac is an upcoming standard for wireless LAN physical layer and MAC layer for very high throughput (VHT) communication with targeted throughput greater than 1 Gbps [1] below 6 GHz band. The IEEE 802.11ac (also termed as VHT wireless LAN) physical layer is based on orthogonal frequency division multiplexing (OFDM) modulation and signal processing with multiple antennas at transmitter and receiver (MIMO). A device compliant to IEEE 802.11ac standard should be backward compatible to wireless LAN standards IEEE 802.11a and IEEE 802.11n. The VHT Physical layer supports legacy frame format, high throughput (HT) mixed frame format, HT green-field frame format and VHT mixed format [2,3]. The VHT wireless LAN receiver has to synchronize for any of these frame formats. The OFDM modulation is sensitive to timing synchronization in multipath fading channel. The cyclic shift diversity (CSD) used in VHT wireless LAN introduces pseudo multipath at the receiver and causes error in the symbol boundary estimate. Hence, there is a need for a robust and adaptive time synchronization that suits for all frame formats in VHT wireless LAN. Without the accurate time synchronization, there will be

Author

Nanda Kishore Chavali; Venkata Krishna Reddy Pilli

Publisher

ACM

Published

2012

Language

EN