networks wireless multiplexing
Complexity makes travellers miss their connection
Comment In the not too distant future, you will be able to add 3G Long Term Evolution (LTE), mobile WiMax, multiple in multiple out (MiMo) and orthogonal frequency division multiplexing (OFDM) to the mix. High-speed wireless networks are meant to make life... [12 Jun 2008]
Orthogonal Frequency Division Multiplexing for Wireless Networks
White Paper Orthogonal frequency division multiplexing (OFDM) is a special case of multicarrier transmission, where a single datastream is transmitted over a number of lower rate subcarriers. In July 1998, the IEEE standardization group decided to select OFDM... [10 Apr 2008]
Low Cost Residual Phase Tracking Algorithm for OFDM-Based WLAN Systems
White Paper This paper presents the design of an efficient low complexity orthogonal frequency division multiplexing receiver targeting wireless local area networks. The focus is on mitigation of the residual frequency synchronization error and sampling... [10 Apr 2008]
OFDM Versus Single Carrier With Cyclic Prefix: A System-Based Comparison
White Paper Most systems rely on the use of Orthogonal Frequency Division Multiplexing (OFDM) because of its capability to elegantly cope with multi-path interference. In recent years, wireless indoor networks have received a lot of scientific and industrial... [10 Apr 2008]
Quality-of-Service Driven Power and Rate Adaptation for Multichannel Communications Over Wireless Links
White Paper In particular, the paper uses multichannel communications to model the conceptual architectures for either diversity or multiplexing systems, which play a fundamental role in physical-layer evolutions of mobile wireless networks. [31 Aug 2007]
Quality-of-Service Driven Power and Rate Adaptation for Multichannel Communications Over Wireless Links
White Paper In particular, the paper uses multichannel communications to model the conceptual architectures for either diversity or multiplexing systems, which play a fundamental role in physical-layer evolutions of mobile wireless networks. [10 Aug 2007]
Data Technologies in 3G Access Networks: Meeting the Demand for New Mobile Services
White Paper For most mobile operators this means moving away from running packet-switched services over Time Division Multiplexing (TDM) networks, and running data over an efficient and cost effective data-focused infrastructure. [01 Aug 2007]
PAPR Reduction in OFDM Systems Using Constellation Shaping
White Paper Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier transmission technique, which is widely adopted in different communication applications. Moreover, OFDM offers some advantages in higher order modulations and in the networking... [24 Jul 2007]
Joint Congestion Control and OFDMA Scheduling for Hybrid Wireline-Wireless Networks
White Paper This paper considers joint congestion control and multiuser scheduling in a hybrid wireline and wireless network, where the air interface of wireless links is based on Orthogonal Frequency Division Multiplexing (OFDM). [19 Apr 2007]
Joint Symbol Timing and Channel Estimation for OFDM Based WLANs
White Paper The orthogonal frequency-division multiplexing access technique has recently been attracting considerable interest especially for Wireless Local Area Networks (WLAN's). This paper considers the joint estimation of the symbol timing, the channel... [18 Apr 2007]
Multi Rate Orthogonal Frequency Division Multiplexing
White Paper A novel multi rate Orthogonal Frequency Division Multiplexing (OFDM) system is proposed in this paper. It is expected to provide a flexible physical layer support to next generation wireless networks. [18 Apr 2007]
Capacity of OFDM on Typical Indoor Wireless Channels at 60 GHz
White Paper The paper shows the promising modulation technique Orthogonal Frequency Division Multiplexing (OFDM) makes good use of the available frequency band by allocating sub carriers orthogonally to each other. [15 Apr 2007]
Carrier Frequency Offset Estimation for OFDM-Based WLANs
White Paper This paper presents an efficient Carrier Frequency Offset (CFO) estimation algorithm for the Orthogonal Frequency-Division Multiplexing (OFDM)-based Wireless Local Area Networks (WLANs). The packet preamble information the authors use is based on... [14 Apr 2007]
Comparison of Frequency Offset Estimation Methods for OFDM Burst Transmission in the Selective Fading Channels
White Paper In this paper the performance and complexity of several frequency offset estimation schemes for the OFDM (Orthogonal Frequency Division Multiplexing) burst transmission in the selective fading channels has been compared. [14 Apr 2007]
Channel and Frequency Offset Estimation for a MIMO-OFDM System
White Paper Spatial division multiplexing using a Multiple-Input Multiple-Output (MIMO) technique has been studied to increase the transmission rate over 100 Mbps. An OFDM technique has been utilized for Wireless Local Area Networks (WLANs). [13 Apr 2007]
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