techniques ofdm
RSS techniques ofdmOn the Exploitation of Multiple Access Points in a Wireless Single-Frequency-Network Using TDD-OFDM-MIMO Techniques
White Paper This paper proposes a new MIMO data transmission scheme, which combines Single-Frequency-Network (SFN) with TDD-OFDM-MIMO applied for wireless LAN networks. However, the efficiency of MIMO techniques... [18 Apr 2007]
Adaptive Modulation Techniques for Duplex OFDM Transmission
White Paper The design tradeoffs of turbo-coded burst-by-burst adaptive Orthogonal Frequency Division Multiplex (OFDM) wideband transceivers are analyzed. This paper demonstrates that upon aiming for a higher throughput a higher... [18 Apr 2007]
Bandwidth and Power Efficiency Considerations for Optimal Training in OFDM
White Paper Orthogonal Frequency Division Multiplexing (OFDM) has been adopted by many high speed transmission standards. Pilot Tone Assisted Modulation (PTAM) is a well known technique to estimate the Channel State Information... [18 Apr 2007]
Peak-to-Average Power Ratio Reduction of OFDM Signals Using Pulse Shaping
White Paper This paper proposes an efficient technique for reducing the PAPR of OFDM signals. This technique is also very flexible and it can be used for OFDM and Discrete Multi-Tone (DMT) transmissions. The... [18 Apr 2007]
Channel Capacity of TDD-OFDM-MIMO for Multiple Access Points in a Wireless Single-Frequency-Network
White Paper This paper proposes a new MIMO data transmission scheme, which combines Single-Frequency-Network (SFN) with TDD-OFDM-MIMO applied for wireless LAN networks. However, the efficiency of MIMO techniques... [18 Apr 2007]
Increasing Data Rates Through Iterative Coding and Antenna Diversity in OFDM-Based Wireless Communication
White Paper Transmitter diversity and coding techniques can be used in high date-rate wireless communications with Orthogonal Frequency Division Multiplexing (OFDM) to improve the performance. This paper observes... [18 Apr 2007]
Integer-Based Constellation Shaping Method for PAPR Reduction in OFDM Systems
White Paper In this paper, the problem of reducing the Peak to Average Power Ratio (PAPR) in an Orthogonal Frequency Division Multiplexing (OFDM) system is considered. This new technique offers a PAPR that is significantly lower... [18 Apr 2007]
Diversity Techniques for OFDM Based WLAN Systems
White Paper This paper presents different spatial diversity techniques that can be employed in an OFDM based WLAN system to improve the system performance. This paper presents some results obtained by simulation... [14 Apr 2007]
Modified SMI Techniques for Frequency Selective Channels in OFDM
White Paper In this paper, windowing techniques are applied in order to calculate a beamformer per subcarrier for Orthogonal Frequency Division Multiplexing (OFDM) systems with very limited known training. The... [14 Apr 2007]
MMSE Techniques for Space Diversity Receivers in OFDM-Based Wireless LANs
White Paper This paper studies the application of the Minimum Mean Square Error beamformer to OFDM-based Wireless LANs. The questions here addressed are mainly the design with finite-length data and the choice of the... [14 Apr 2007]
Time-Domain and Frequency-Domain Per-Tone Equalization for OFDM Over Doubly-Selective Channels
White Paper This paper proposes new time-domain and per-tone frequency-domain equalization techniques for OFDM transmission over time- and frequency-selective channels. The paper presents one mixed time- and... [14 Apr 2007]
A Multirate Pilot-Symbol-Assisted Channel Estimator for OFDM Transmitter Diversity Systems
White Paper Orthogonal Frequency Division Multiplexing (OFDM) transmitter diversity techniques have been shown to be efficient means of achieving near optimal diversity gain in frequency-selective fading channels. [14 Apr 2007]
Complex-Field Coding for OFDM Over Fading Wireless Channels
White Paper Orthogonal Frequency-Division Multiplexing (OFDM) converts a time-dispersive channel into parallel subchannels, and thus facilitates equalization and (de)coding. But when the channel has nulls close to or on the Fast... [14 Apr 2007]
Evaluating the Physical Layer Performance of an OFDM Candidate for Fourth Generation Networks
White Paper In this paper, work performed under the framework of the IST SATURN project for wide area cellular OFDM is presented in the context of 4G networks. The key link parameters for a 4G OFDM system are... [14 Apr 2007]
Non-Data-Aided Carrier Offset Estimators for OFDM With Null Subcarriers: Identifiability, Algorithms, and Performance
White Paper This paper investigates identifiability issues involving high-resolution techniques that have been proposed for blind CFO estimation based on null subcarriers. The ability of orthogonal frequency-division multiplexing... [14 Apr 2007]
