bandwidth modulation
A Bandwidth Efficient Modulation Scheme Using Quasi-Orthogonal Sequences
White Paper High bandwidth efficiency and quasi-orthogonality between the modulation symbols allows to increase the normalized data rate with little or no degradation in the required signal-to-noise ratio per bit to... [11 Jul 2008]
MU-OFDM Power and Subchannel Allocation Performance on DSP
White Paper In order to maximize the capacity of a time-varying channel, wireless transceiver designers often implement adaptive modulation that adjusts transfer parameters such as power distribution, coding and... [11 Apr 2007]
Adaptive Modulation Based MC-CDMA Systems for 4G Wireless Consumer Applications
White Paper The digital modulation schemes considered are M-ary QAM, M-ary PSK, M-ary CPM, M-ary MHPM, and GMSK with varying bit-duration-bandwidth product. The results of the adaptive systems clearly indicate that... [16 Jun 2006]
Coded Modulation for Noncoherent Reception With Application to OFDM
White Paper For high bandwidth efficiencies, combined phase and amplitude modulation is used. Power- and bandwidth-efficient differentially encoded transmission over slowly time-varying fading... [14 Apr 2007]
Implications of Linear Phase Dispersion on OFDM and Fast-OFDM Systems
White Paper This paper investigates a new proposed modulation scheme based on Orthogonal Frequency Division Multiplexing. This new scheme applies only in one dimensional modulation techniques (e.g. Fast-OFDM (FOFDM)... [29 Oct 2004]
Space-Time-Frequency Coded OFDM Over Frequency-Selective Fading Channels
White Paper This, together with the scarcity of bandwidth resources, motivate research toward developing efficient coding and modulation schemes that improve the quality and bandwidth efficiency of... [10 Apr 2008]
A Network Architecture to Interconnect Local Area Networks Using Non-GEO Satellites
White Paper Furthermore the bandwidth efficiency of modulation schemes and the trade-off between coding gain and error correction code overhead is explained providing an example scenario. The main objective of WG2... [25 Feb 2004]
Homeworx: The OFDM Advantage
White Paper The spectrum modulation scheme that is implemented by the Homeworx platform makes the most efficient use of bandwidth of any system on the market today. The greater the number of services- that can be... [25 Feb 2004]
Spectral Efficiency of Coded Phase-Shift Keying for Fiber-Optic Communication
White Paper Several optical modulation and detection schemes are compared in this paper by computing their spectral efficiencies over additive white Gaussian noise channels. The bandwidth savings of differential... [07 Apr 2005]
CDMA Channel Parameters Maximizing TCP Throughput
White Paper Specifically, in the case where direct sequence spread spectrum modulation is used over a fixed bandwidth channel, it was found that the optimal processing gain m that maximizes TCP throughput. A single... [31 Oct 2007]
Measured Data Rate From Adaptive Modulation in Wideband OFDM Systems
White Paper Adaptive modulation is implemented on a wideband OFDM transceiver prototype to quantify its performance in indoor wireless environment. The measured adaptive average data rate is 2.88 times the average data rate without... [11 Apr 2007]
Proposal of Adaptive Downlink Modulation Using OFDM and MC-CDMA for Future Mobile Communications System
White Paper In this paper, an adaptive downlink modulation using OFDM and MC-CDMA is presented for maximizing the system capacity and actualizing QoS (Quality of Service) control of future mobile communications. To enhance system... [10 Apr 2008]
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 achieve high bandwidth... [18 Apr 2007]
Anytime Coding on the Infinite Bandwidth AWGN Channel: A Sequential Semi-Orthogonal Code
White Paper This paper shows that it is possible to do this using a semi-orthogonal variation of pulse position modulation that is sequential in nature - bits can be "Streamed out" without having to buffer up blocks of bits at the... [11 Jul 2008]
Game Analysis: Cellular Vs. WLAN
White Paper In the GSM camp this evolution starts with the introduction of GPRS, offering packet switched cellular data, EDGE, offering enhanced data rates with the introduction of the 8PSK modulation technique, WCDMA, offering... [23 Mar 2005]
Keep updated for stories matching bandwidth modulation via RSS
