HiperLAN Collapse Opens European Door To 802.11a
News HiperLAN had technical advantages, such as the inclusion of quality of service which allows it to handle voice and streaming media, and technology to prevent interference with other 5GHz radio equipment; however, 802.11a stole a march by arriving...
[December 18, 2001, 15:34]
Physical Layer Performance Of HIPERLAN/2 In Measured Indoor Channels
White Papers In this paper, the performance of physical layer (PHY) of HIPERLAN/2 is evaluated in terms of long transport channel packet data unit (LCH-PDU) error rate (PER) and throughput in a noise-limited scenario.
[July 26, 2005, 0:00]
Diversity Techniques For OFDM Based WLAN Systems In Rice And Rayleigh Channels
White Papers HIPERLAN/2 (HL/2) is a Wireless LAN (WLAN) standard defined by the ETSI BRAN. The paper presents some results obtained by simulation when a HIPERLAN/2 transceiver is employed. This standard will operate in the unlicensed 5 GHz band and will provide...
[March 28, 2005, 0:00]
IDF: Intel's Tri-mode Future For Wireless Networking
News The European Union at first banned any networks from this band apart from the Hiperlan II standard, despite a complete lack of products: this restriction is still in place, but by making 802.11a a nominal member of the Hiperlan family of standards...
[February 27, 2002, 10:07]
A To Z Of Wireless Standards
News As of early 2003, you can buy "802.11g" cards despite the standard not being finished until later this year: interoperability between vendors and aspects of 802.11b compatibility being most problematic.hH is for Hiperlan -- the European standard...
[March 26, 2003, 8:04]
Pseudo Random Postfix OFDM Based Modulator For Next Generation 60GHz WLANs
White Papers The IST-2001-32686 project BROADWAY proposes a hybrid dual frequency system operating at 5GHz based on ETSI BRAN HIPERLAN/2 and at 60GHz through an innovative fully ad-hoc extension named HIPERSPOT. In order to allow Single Frequency Network (SFN...
[October 21, 2004, 0:00]
Configurable Memory Organisation For Communication Applications
White Papers A configurable memory organisation for the execution of Hiperlan/2 transceiver baseband processing and MPEG2 decoding is presented. The configuration of the memory system is done by controlling the DSP processor's access to memory buses with an...
[October 4, 2004, 0:00]
PER-Prediction For Link Adaptation In OFDM Systems
White Papers The physical layers (PHY) of modern wireless communication standards like HiperLAN/2 or IEEE802.11a provide a high degree of flexibility allowing the Data Link Control (DLC) layer to adapt various transmission parameters to the currently observed...
[November 1, 2004, 23:00]
Mapping Wireless Communication Algorithms To A Reconfigurable Architecture
White Papers An overview of a wireless LAN communication system, namely HiperLAN/2, and a Bluetooth communication system is given. This paper discusses the implementation of multi-standard communication systems in dynamically reconfigurable heterogeneous hardware.
[November 22, 2005, 23:00]
Mapping Wireless Communication Algorithms To A Recongurable Architecture
White Papers An overview of a wireless LAN communication system, namely HiperLAN/2, and a Bluetooth communication system will be given. This paper discusses the implementation of multi-standard communication systems in dynamically reconfigurable heterogeneous...
[February 16, 2006, 23:00]
Real-Time Concepts For MIMO-OFDM
White Papers The OFDM parameters are similar to the 802.11a and HiperLAN/2 standards. This paper presents a concept for implementing MIMO-OFDM in real time on a hybrid FPGA/DSP software-radio platform. A new preamble is defined for the channel estimation, to...
[August 2, 2007, 0:00]
A TCM OFDM Software-Defined Transceiver
White Papers In this paper, authors choose Trellis Coded Modulation (TCM)-OFDM, instead of Convolutional Code (CC)-OFDM adopted by HIPERLAN/2 and IEEE802.11a, to ease the SNR requirement. Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier...
[October 16, 2004, 0:00]
Orthogonal Frequency Division Multiplexing (OFDM)
White Papers Also the introduction of Digital Audio Broadcasting (DAB) based on OFDM, successful test on OFDM for Digital Television Terrestrial Broadcasting (dTTb) and research on OFDM for HIPERLAN type II and Wireless ATM projects have increased the...
[March 30, 2005, 0:00]
Diversity Techniques For OFDM Based WLAN Systems: A Comparison Between Hard, Soft Quantified And Soft No Quantified Decision
White Papers This paper also presents some results obtained by simulation when a HIPERLAN/2 transceiver is employed. This paper presents different spatial diversity techniques that can be employed in an OFDM based WLAN system to improve the system performance...
[October 28, 2004, 0:00]
Development Of An OFDM Based High Speed Wireless LAN Platform Using The TI C6x DSP
White Papers Coded Orthogonal Frequency Division Multiplexing (COFDM) is currently specified in all three of the world's 5 GHz wireless LAN standards (Hiperlan/2, IEEE 802.11a and MMAC HiSWANa). This technology was chosen due to its robustness at high data...
[April 11, 2007, 0:00]
Synchronization Of Single Frequency Networks
White Papers SFNs (Single Frequency Networks) are a very effective means to increase the coverage area e.g.of WLAN (Wireless LAN) systems like H/2 (HiperLAN/2) or IEEE 802.11a in hot spot scenarios, where an AP (Access Point) connected to a core network should...
[March 30, 2005, 0:00]
Bandwidth Efficient Medium Access For An Inhouse Wireless LAN
White Papers IEEE 802.11, HIPERLAN or Magic WAND) cannot fulfill quality of service demands for typical inhouse applications (e.g.video, audio, phone and computer) or they set up the need for a central hub. This paper presents a new medium access method for a...
[December 6, 2007, 23:00]
Bluetooth Will Kill Off Wireless Standard
News Wireless leader Proxim has also come out and said that it can foresee the death of 802.11 and is staking its future on HiperLAN. The 802.11 standard uses the same radio frequency as Bluetooth, the license free ISM (Industrial, Scientific and...
[May 18, 1999, 8:37]
