fading
RSS fadingNoncoherent Reception of Constant Envelope OFDM in Flat Fading Channels
White Paper Performance is evaluated in flat fading channels having both Rayleigh and Ricean statistics. A noncoherent Constant Envelope Orthogonal Frequency-Division Multiplexing (CE-OFDM) receiver is proposed. It is shown that... [11 Apr 2007]
A Space-Time Block-Coded OFDM Scheme for Unknown Frequency-Selective Fading Channels
White Paper This paper introduces a space-time block-coded orthogonal frequency-division multiplexing (STBC-OFDM) scheme for frequency-selective fading channels, which does not require channel knowledge either at the transmitter or... [21 Oct 2004]
A Model of Coverage Probability Under Shadow Fading
White Paper This paper presents a simple analytic model of coverage probability for CDMA cellular phone systems under log normally distributed shadow fading. Prior analyses have generally considered the coverage probability of a... [06 Apr 2005]
BER Performance of DS-CDMA System Over a Frequency Selective Multipath Rayleigh Fading Channel
White Paper This paper presents a study of the bit error rate (BER) performance of DS-CDMA system over a frequency selective multipath Rayleigh fading channel with perfect power control. The performance of DS-CDMA over the frequency... [01 Aug 2004]
MIMO Capacity of an OFDM-Based System Under Ricean Fading
White Paper This paper presents the multiple-input multiple-output (MIMO) capacity results of an orthogonal frequency division multiplexing (OFDM) based system under Ricean fading. It also assumes that transmitter does not know the... [01 Nov 2004]
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]
New Spreading Transforms for Fading Channels
White Paper This paper introduces a new class of symbol-spreading transforms that are well-suited for use in error-control coding systems operating in fading channels. These unitary transforms have the property that they allow for... [02 Nov 2004]
Costs and Benefits of Fading for Streaming Media Over Wireless
White Paper In particular, the time-varying fading nature of the channel means that it is inherently unreliable, but also that significant throughput improvements are possible when scheduling is coupled opportunistically with... [23 Aug 2007]
The Performance of PCC-OFDM in Multipath Fading Channels
White Paper This paper investigates the effect of PCC on the fading characteristics of multipath channels and on the error performance OFDM in a two-path fading channels. Polynomial cancellation coding (PCC) is a... [26 Oct 2004]
System Capacity of Wideband OFDM Communications Over Fading Channels Without Channel Knowledge
White Paper Assuming PSK modulation, this paper derives the system capacity of pulse-shaped orthogonal frequency division multiplexing (OFDM) communications over time-frequency selective fading channels in the absence of channel... [28 Mar 2005]
Effects of Clipping on the Error Performance of OFDM in Frequency Selective Fading Channels
White Paper Previous studies on the effect of the clipping noise on the error performance of orthogonal frequency-division multiplexing (OFDM) systems in frequency selective fading channels provide pessimistic results. [26 Oct 2004]
Low-Complexity ICI Suppression for OFDM Over Time-And Frequency-Selective Rayleigh Fading Channels
White Paper While rapid variations of the fading channel cause In-Tercarrier Interference (ICI) in OFDM, thereby degrading its performance considerably, they also introduce temporal diversity, which can be exploited to improve the... [11 Apr 2007]
Capacity Maximizing MMSE-Optimal Pilots for Wireless OFDM Over Frequency-Selective Block Rayleigh Fading Channels
White Paper The location, number, and power of pilot symbols embedded in multicarrier block transmissions over rapidly fading channels, are important design parameters affecting not only channel estimation performance, but also... [14 Apr 2007]
Space-Time Block-Coded Multiple Access Through Frequency-Selective Fading Channels
Mitigation of multipath fading effects and suppression of multiuser interference (MUI) constitute major challenges in the design of wide-band third-generation wireless mobile systems. Space-time (ST) coding offers an... [30 Mar 2005]
LDPC-Based Space-Time Coded OFDM Systems Over Correlated Fading Channels: Performance Analysis and Receiver Design
White Paper This paper considers a space-time coded (STC) orthogonal frequency-division multiplexing (OFDM) system with multiple transmitter and receiver antennas over correlated frequency and time-selective fading channels. [21 Oct 2004]
