Efficient Inner Receiver Design for OFDM-Based WLAN Systems: Algorithm and Architecture

OFDM Based WLAN Systems

This report is intended to provide an overview of the present state of WLANs with respect to physical layer issues and identify some key research issues for future generations of WLANs. The current standards (IEEE 802.11a in USA, HiperLAN/2 in Europe and MMAC in Japan) are all based on OFDM in their PHY layer. Thus, detailed attention on basics of OFDM related WLAN systems are given in the repo...

Algorithm to Improve the Performance of OFDM based WLAN Systems

In this paper we propose a new form of adaptive modulation which has the ability of using the higher order modulation schemes such as 256-QAM and 128-QAM at low SNR values in order to enhance the data rate without degrading the SER performance especially at low SNR values. This new form of adaptive modulation is combined together with the power control and the PAPR clipping and filtering techni...

Diversity techniques for OFDM based WLAN systems

This paper presents different spatial diversity techniques that can be employed in an OFDM based WLAN system to improve the system performance. We present some results obtained by simulation when a HIPERLAN/2 transceiver is employed.

Low Power Efficient MIMO-OFDM Design for 802.11n WLAN System

In modern world of communication systems, various new methods have developed to replace the previous conventional techniques that provide data communication with high speed. As wireless communication guidelines were developed it became necessary to develop new techniques like Orthogonal Frequency Division Multiplexing (OFDM) for data security and reliability while data transmission. Idea behind...

FPGA implementation of an OFDM-based WLAN receiver