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whitepaper Orthogonal Frequency Division Multiplexing OFDM), which is a multicarrier modulation scheme, splits high data rate information symbols into lower rate parallel data streams and transmits this parallel information on different orthogonal carriers.
[11 Apr 2008]
whitepaper 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]
whitepaper In this paper, the potential of orthogonal frequency-division multiplexing-code-division multiplexing (OFDM-CDM) combined with the pre-equalization is investigated. The code-division multiplexing (CDM) component within an orthogonal frequency...
[10 Apr 2008]
whitepaper 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]
whitepaper Spatial multiplexing in particular has been shown to increase the capacity proportionally to the number of transmit antennas in many important cases. In this paper, the effectiveness of spatial multiplexing in the forward link of cellular CDMA...
[10 Apr 2008]
whitepaper Orthogonal frequency division multiplexing (OFDM) is a special case of multicarrier transmission, where a single datastream is transmitted over a number of lower rate subcarriers. In July 1998, the IEEE standardization group decided to select OFDM...
[10 Apr 2008]
whitepaper Orthogonal frequency division multiplexing (OFDM) is a promising technique for multi-antenna broadband systems, since it significantly reduces receiver complexity by providing orthogonal sub-channels.
[10 Apr 2008]
whitepaper Orthogonal frequency-division multiplexing (OFDM) converts a frequency-selective fading channel into parallel flat-fading subchannels, thereby simplifying channel equalization and symbol decoding. However, OFDM's performance suffers from the loss...
[10 Apr 2008]
whitepaper This paper describes Orthogonal Frequency Division Multiplexing (OFDM) and its application to mobile communications. OFDM is a modulation and multiple access technique that has been explored for over 20 years.
[10 Apr 2008]
whitepaper High peak-to-average power ratio (PAR) of the transmitted signal is one of the limitations to using orthogonal frequency-division multiplexing (OFDM) systems. This paper presents a novel orthogonal projection-based partial transmit sequences...
[10 Apr 2008]
whitepaper 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]
whitepaper This paper presents the design of an efficient low complexity orthogonal frequency division multiplexing receiver targeting wireless local area networks. The focus is on mitigation of the residual frequency synchronization error and sampling...
[10 Apr 2008]
whitepaper 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]
whitepaper This paper compares two block transmission systems over frequency-selective fading channels: orthogonal frequency-division multiplexing (OFDM) versus single-carrier modulated blocks with zero padding (ZP).
[10 Apr 2008]
whitepaper A class of Orthogonal Frequency Division Multiplexing - Continuous Phase Modulation (OFDM-CPM) signals is introduced in which binary data sequence is mapped to complex symbols using the concept of correlated phase states of a CPM signal.
[10 Apr 2008]
whitepaper This paper proposes a new diversity technique for broadband wireless access systems that uses orthogonal frequency division multiplexing (OFDM) and describes its performance. This technique consists of two components.
[10 Apr 2008]
whitepaper 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]
whitepaper 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 variation of the channel during one OFDM frame destroys the...
[10 Apr 2008]
whitepaper 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]
whitepaper Multiuser orthogonal frequency division multiplexing (MU-OFDM) is a promising technique for achieving high downlink capacities in future cellular and wireless LAN systems. The sum capacity of MU-OFDM is maximized when each subchannel is assigned to...
[10 Apr 2008]
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