fading division multiplexing
Implementation of a MIMO OFDM Based Wireless LAN System
White Paper The combination of Multiple-Input Multiple-Output (MIMO) signal processing with Orthogonal Frequency Division Multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of next... [10 Apr 2008]
Linearly Precoded or Coded OFDM Against Wireless Channel Fades?
White Paper This paper identifies the maximum achievable diversity order for i.i.d.or correlated Rayleigh fading channels and also provide design rules for achieving maximum diversity gains with LP-OFDM. Orthogonal Frequency... [10 Apr 2008]
OFDM or Single-Carrier Block Transmissions?
White Paper This paper compares two block transmission systems over frequency-selective fading channels: orthogonal frequency-division multiplexing (OFDM) versus single-carrier modulated blocks with... [10 Apr 2008]
Linear Constellation Precoding for OFDM With Maximum Multipath Diversity and Coding Gains
White Paper Orthogonal frequency-division multiplexing (OFDM) converts a frequency-selective fading channel into parallel flat-fading subchannels, thereby simplifying channel... [10 Apr 2008]
Performance Analysis of High QAM OFDM System Over Frequency Selective Time-Varying Fading Channel
White Paper This paper considers the performance degradation of a high QAM orthogonal frequency division multiplexing (OFDM) system over frequency selective time-varying fading channels. The time... [10 Apr 2008]
Error Probability Minimizing Pilots for OFDM With M-PSK Modulation Over Rayleigh-Fading Channels
White Paper Orthogonal frequency division multiplexing (OFDM) with pilot symbol assisted channel estimation is a promising technique for high rate transmissions over wireless frequency-selective... [10 Apr 2008]
Implementation of a MIMO OFDM-Based Wireless LAN System
White Paper The combination of multiple-input multiple-output (MIMO) signal processing with orthogonal frequency division multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of... [10 Apr 2008]
Space-Time-Frequency Coded OFDM Over Frequency-Selective Fading Channels
White Paper This paper proposes novel space-time-frequency (STF) coding for multiantenna orthogonal frequency-division multiplexing (OFDM) transmissions over frequency-selective Rayleigh fading... [10 Apr 2008]
Link Adaptation in OFDM Systems
White Paper OFDM is a promising digital modulation technique that effectively divides the frequency band into a number of narrow subcarriers that are each flat-fading. This paper considers link adaptation in an orthogonal frequency... [10 Apr 2008]
OFDM Code-Division Multiplexing With Pre-Equalization for Mobile Communications
White Paper Different pre-equalization techniques are investigated, and it is shown that pre-equalized OFDM-CDM systems can achieve promising performance in fading channels. In this paper, the potential of orthogonal... [10 Apr 2008]
Viterbi Decoding Strategies for 5 GHz Wireless LAN Systems
White Paper These systems employ Orthogonal Frequency Division Multiplexing (OFDM) technology, and utilize Forward Error Correction (FEC) coding, based on a 1/2-rate convolutional encoder, to combat frequency... [06 Dec 2007]
Feasibility of Adaptive Transmission for Multicarrier and Frequency Hopping Mobile Radio Systems
White Paper The paper describes the design and performance of adaptive transmission methods enabled by the Long Range Fading Prediction algorithms (LRP) for Orthogonal Frequency Division... [31 Aug 2007]
Rapid MIMO-OFDM Software Defined Radio System Prototyping
White Paper MIMO communication, enabled by the use of multiple transmit and multiple receive antennas, is known for its high spectral efficiency as well as its robustness against fading and interference. Combining MIMO with... [31 Aug 2007]
PAPR Reduction of OFDM Signal Using Turbo Coding and Selective Mapping
White Paper Orthogonal Frequency Division Multiplexing (OFDM) technique is a promising technique to offer high data rate and reliable communications over fading channels. The main implementation... [18 Apr 2007]
On the Influence of Phase Noise Induced ICI in MIMO OFDM Systems
White Paper It is shown that in the case of frequency flat Rayleigh fading, the influence of receiver and transmitter PN is equal. In the case of independent Rayleigh fading, however, the impact of the receiver PN... [18 Apr 2007]
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