channel blind
RSS channel blindAnalysis of Decision-Feedback Based Broadband OFDM Systems
White Paper In wireless communications, about 25%of the bandwidth is dedicated to training symbols for channel estimation. The principle is as follows: the detected symbols (hard decision) are fed back to the... [11 Aug 2008]
A Pseudo Random Postfix OFDM Based Modulator for Multiple Antennæ Systems
White Paper A new channel tracking strategy is detailed based on a Moving Average (MA) Doppler modeling that preserves the Jakes channel coefficients correlation properties. In this paper a new generic MTMR... [24 Jan 2008]
Channel Decoder Architecture for 3G Mobile Wireless Terminals
White Paper Channel coding is a key element of any digital wireless communication system since it minimizes the effects of noise and interference on the transmitted signal. In Third-Generation (3G) wireless systems... [01 Aug 2007]
Finite-Alphabet Based Channel Estimation for OFDM and Related Multicarrier Systems
White Paper Novel blind channel estimators based on the finite alphabet property of information symbols are derived in this paper for OFDM and related MultiCarrier Code-Division Multiple Access MC-CDMA) systems.... [19 Apr 2007]
Reduced Complexity Blind Layered Space-Time Equalization for MIMO OFDM Systems
White Paper Blind Source Separation (BSS) combined with a Vertical Bell Laboratories Layered Space-Time (V-BLAST) scheme is used in a small portion of subcarriers to perform blind signal detection and... [18 Apr 2007]
Multiuser Detection and Channel Estimation in MIMO OFDM Systems Via Blind Source Separation
White Paper This paper proposes a blind multiuser detection and channel estimation method for Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) systems based on... [18 Apr 2007]
Adaptive Modulation Techniques for Duplex OFDM Transmission
White Paper Various blind modem mode detection techniques have also been investigated and the most complex channel coding trellis-based detection algorithm was found to be the most powerful. The design tradeoffs of... [18 Apr 2007]
Bandwidth and Power Efficiency Considerations for Optimal Training in OFDM
White Paper Pilot Tone Assisted Modulation (PTAM) is a well known technique to estimate the Channel State Information (CSI) in OFDM but is not bandwidth efficient. To improve the power efficiency, the authors employ a... [18 Apr 2007]
A Comparison of Blind Channel Estimation Schemes for OFDM in Fading Channels
White Paper This paper brings together three recently proposed blind detection schemes which are specific to Orthogonal Frequency Division Multiplexing (OFDM) systems. The aim is to study the performance of these schemes in fading... [14 Apr 2007]
Blind Layered Space-Time Equalization for MIMO OFDM Systems
White Paper It is shown that the proposed system significantly improves the performance compared to using BSS only and can approach the performance with perfect Channel State Information (CSI). This paper proposes a novel... [14 Apr 2007]
Blind Channel Estimation for OFDM Systems Based on Non-Redundant Linear Precoding
White Paper This paper considers a novel approach that can be applied on a single transmit/receive antenna OFDM system, to increase multipath diversity, and at the same time, enable blind channel estimation at the... [13 Apr 2007]
Blind OFDM Channel Estimation Through Simple Linear Precoding
White Paper A novel approach of blind channel estimation for OFDM systems is proposed. The transform imposes a correlation structure on the transmitted blocks, which is exploited at the receiver to recover the... [13 Apr 2007]
Blind OFDM Channel Estimation Using Receiver Diversity
White Paper This paper exploits receiver diversity for blind channel estimation for OFDM systems with cyclic prefix. The developed channel estimation algorithm has the following advantages compared... [13 Apr 2007]
Totally Blind Channel Estimation for OFDM on Fast Varying Mobile Radio Channels
White Paper A new blind channel estimation scheme for OFDM-systems is proposed based on the ML-principle. A novel approach is also proposed for resolving the phase ambiguity of the blind... [13 Apr 2007]
Joint Blind Timing Synchronization and Channel Estimation for OFDM Using Receiver Diversity
White Paper Joint blind timing synchronization and channel estimation using receiver diversity are investigated in this paper. The proposed algorithm is able to identify channel length, therefore it... [13 Apr 2007]
