multiple systems orthogonal
ML Estimation of Timing and Frequency Offset Using Multiple OFDM Symbols in OFDM Systems
White Paper An approach of joint blind estimation of the symbol timing offset and carrier frequency offset using multiple orthogonal frequency-division multiplexing (OFDM) symbols is proposed for OFDM systems in frequency selective fading environment. [03 Jul 2008]
Blind Carrier Frequency Offset Estimation in SISO, MIMO and Multiuser OFDM Systems
White Paper Relying on a kurtosis-type criterion, in this paper a low-complexity blind carrier frequency offset (CFO) estimator for orthogonal frequency-division multiplexing (OFDM) systems is developed. This paper shows that this approach can be applied to... [03 Jul 2008]
Adaptive Loading in MIMO/OFDM Systems
White Paper Orthogonal Frequency Division Multiplexing (OFDM) is a powerful technique employed in communications systems suffering from frequency selectivity. This paper demonstrates OFDM with adaptive modulation applied to Multiple-Input Multiple-Output (MIMO... [03 Jul 2008]
Why License CommStack's OFDM Modem IP Cores?
White Paper CommStack has developed several OFDM (Orthogonal Frequency Division Multiplexing) modems as synthesizable Hardware Description Language (HDL) cores that are available for license. In OFDM systems, the data to be transmitted modulates multiple... [03 Jul 2008]
Synchronization of Optical Orthogonal Codes in Optical CDMA Systems Via Simple Serial-Search Method
White Paper This paper analyzes the performance of a simple serial-search algorithm for optical code division multiple access (CDMA) systems using Optical Orthogonal Codes (OOC). For our analysis we use advance photon-counting methods and we consider the... [03 Jul 2008]
Synchronization in Interleaved OFDMA Systems
White Paper Orthogonal Frequency Division Multiple Access (OFDMA) as a new multiple access technology has received a lot of attention. The estimation of carrier frequency offset in the uplink of OFDMA system is extremely challenging due to the nature of... [03 Jul 2008]
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. O is for Operating systems [12 Jun 2008]
Interpolation Based Unitary Precoding for Spatial Multiplexing MIMO-OFDM With Limited Feedback
White Paper Spatial multiplexing with linear precoding is a simple technique to take advantage of the high spectral efficiency provided by multiple-input multiple-output (MIMO) systems, and it can be simply implemented over frequency selective channels by... [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 next generation wireless communication systems... [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 next-generation wireless communication systems... [10 Apr 2008]
Spatial Multiplexing and Diversity Gain in OFDM-Based MIMO Systems
White Paper Multiple transmit and receive antennas can be used with orthogonal frequency division multiplexing to improve performance and transmission rate. This paper investigates trade offs between different techniques in broadband OFDM-based MIMO systems... [10 Apr 2008]
Effective Throughput: A Unified Benchmark for Pilot-Aided OFDM/SDMA Wireless Communication Systems
White Paper This paper studies the uplink performance of an orthogonal frequency division multiplexing (OFDM) wireless system where multiple antennas are utilized at the base station (BS). Further, capacity can be greatly enhanced through spatial division... [10 Apr 2008]
Cross-Layer Optimization of OFDM Systems for 4G Wireless Communications
White Paper As an example this paper refers to a system using multiple description coding at application layer combined with orthogonal frequency division multiplexing at the link level to provide robustness against hostile wireless channels. [10 Apr 2008]
Analysis of the Influence of Phase Noise in MIMO OFDM Based WLAN Systems
White Paper The influence of phase noise (PN) on the performance of a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) based communication system is analyzed. A PN power weighting function is derived which indicates the... [10 Apr 2008]
OFDM for Mobile Data Communications
White Paper This paper describes Orthogonal Frequency Division Multiplexing (OFDM) and its application to mobile communications. Only recently has it been finding its way into commercial communications systems, as Moore’s Law has driven down the cost of the... [10 Apr 2008]
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