Results 1 - 10 of 126

Performance of Ultra-Wideband Communications with Suboptimal Receivers in Multipath Channels

by John D. Choi, Wayne E. Stark - IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS , 2002
"... The performance of a single-user ultra-wideband (UWB) communication system employing binary block-coded pulse-position modulation (PPM) and suboptimal receivers in multipath channels is considered. The receivers examined include a rake receiver with various diversity combining schemes and an autocor ..."
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The performance of a single-user ultra-wideband (UWB) communication system employing binary block-coded pulse-position modulation (PPM) and suboptimal receivers in multipath channels is considered. The receivers examined include a rake receiver with various diversity combining schemes

Impulse Radio Ultra-Wideband Communication Over Free-Space Optical Links

by Mutlu Koca
"... Abstract—In this paper, an impulse radio ultra-wideband (IR-UWB) communication system whose pulses are generated directly in the optical domain and transmitted over free space optical (FSO) links is presented. The elements of the input Gaussian pulse train are first phase modulated by a high-speed e ..."
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Abstract—In this paper, an impulse radio ultra-wideband (IR-UWB) communication system whose pulses are generated directly in the optical domain and transmitted over free space optical (FSO) links is presented. The elements of the input Gaussian pulse train are first phase modulated by a high

A Subspace Approach to Blind Estimation of Ultra-Wideband Channels

by Zhengyuan Xu, Ping Liu
"... Abstract — In impulse radio based ultra-wideband (UWB) multiuser communication systems, each user’s transmitted symbols are modulated by pulse position modulation (PPM), and corrupted by both intersymbol interference and multiple access interference at the receiver end. To construct low-complexity l ..."
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Abstract — In impulse radio based ultra-wideband (UWB) multiuser communication systems, each user’s transmitted symbols are modulated by pulse position modulation (PPM), and corrupted by both intersymbol interference and multiple access interference at the receiver end. To construct low

Error Performance of Pulse-Based Ultra-Wideband MIMO Systems Over Indoor Wireless Channels

by Huaping Liu, Robert C. Qiu, Senior Member, Zhi Tian
"... Abstract—Multiple-input multiple-output (MIMO) techniques are applied to ultrawideband (UWB) systems to achieve highrate communications over indoor wireless channels. The receiver employs a zero-forcing (ZF) scheme to separate N parallel transmitted data streams for each resolvable multipath compone ..."
Abstract - Cited by 15 (3 self) - Add to MetaCart
Abstract—Multiple-input multiple-output (MIMO) techniques are applied to ultrawideband (UWB) systems to achieve highrate communications over indoor wireless channels. The receiver employs a zero-forcing (ZF) scheme to separate N parallel transmitted data streams for each resolvable multipath

A Novel Modulation Diversity Assisted Ultra-Wideband Communication System

by Jin Tang, Zhengyuan Xu - in Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP , 2005
"... In this paper, a novel modulation diversity assisted (MDA) ultra wideband (UWB) communication system is proposed. Pulse po-sition modulation and pulse amplitude modulation are applied to successive pulses alternately to create modulation diversity and increase system capacity. The proposed system is ..."
Abstract - Cited by 5 (1 self) - Add to MetaCart
In this paper, a novel modulation diversity assisted (MDA) ultra wideband (UWB) communication system is proposed. Pulse po-sition modulation and pulse amplitude modulation are applied to successive pulses alternately to create modulation diversity and increase system capacity. The proposed system

On the Performance of Using Multiple Transmit and Receive Antennas in Pulse-Based Ultrawideband Systems

by Li-chun Wang, Wei-cheng Liu, Student Member, Kuan-jiin Shieh
"... Abstract—This paper presents an analytical expression for the signal-to-noise ratio (SNR) of the pulse position modulated (PPM) signal in an ultrawideband (UWB) channel with multiple transmit and receive antennas. A generalized fading channel model that can capture the cluster property and the highl ..."
Abstract - Cited by 6 (2 self) - Add to MetaCart
Abstract—This paper presents an analytical expression for the signal-to-noise ratio (SNR) of the pulse position modulated (PPM) signal in an ultrawideband (UWB) channel with multiple transmit and receive antennas. A generalized fading channel model that can capture the cluster property

Optimal receiver for Space Time Spreading across a Time Hopping PPM over Ultra Wideband Saleh-Valenzuela MIMO Channel

by Peter Vial, Beata Wysocki, Tad Wysocki
"... Abstract: This paper outlines a technique which can use multiple transmit antennas to send more than one binary bit using the same number of transmit antennas over a single transmission. It uses Ultra Wideband orthogonal pulse position modulation to achieve this, with the receiver employing a Rake r ..."
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Abstract: This paper outlines a technique which can use multiple transmit antennas to send more than one binary bit using the same number of transmit antennas over a single transmission. It uses Ultra Wideband orthogonal pulse position modulation to achieve this, with the receiver employing a Rake

Performance Study of A Near-Optimum Modulation Diversity Assisted Ultra-Wideband Receiver

by unknown authors
"... Abstract — A novel modulation diversity assisted (MDA) ultrawideband (UWB) communication system was recently proposed. In this scheme, pulse position modulation and pulse amplitude modulation are applied to successive transmitted pulses alternately. The resulting modulation diversity helps to overco ..."
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Abstract — A novel modulation diversity assisted (MDA) ultrawideband (UWB) communication system was recently proposed. In this scheme, pulse position modulation and pulse amplitude modulation are applied to successive transmitted pulses alternately. The resulting modulation diversity helps

Non-Optimal receiver for Space Time Spreading across a Time Hopping over Ultra Wideband PPM

by Beata Wysocki, Tadeusz Wysocki, Peter Vial, Beata Wysocki, Tadeusz A Wysocki
"... Abstract — A novel non-optimal chip based technique is proposed to use two antennas to transmit data across a Direct Sequence Time Hopping Ultra Wideband dual antenna wireless communication system to a single receiver. The spread data is sent over the independent channels using the Space Time Spread ..."
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Abstract — A novel non-optimal chip based technique is proposed to use two antennas to transmit data across a Direct Sequence Time Hopping Ultra Wideband dual antenna wireless communication system to a single receiver. The spread data is sent over the independent channels using the Space Time

Multi channel Transmission over the space-time-frequency Multi path & Multiband-OfDM Based Ultra-Wideband MIMO Communication

by Rahul Baghel, Bhaskar Singh, Pushpraj Singh Tanwar , 2014
"... ABSTRACT: The emerging ultra wideband (UWB) system offers a great potential for the design of high speed short-range wireless communications. In order to satisfy the growing demand for higher data rates, one possible solution is to exploit both spatial and multi path diversities via the use of multi ..."
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, the performance of the STF coded hopping multi band UWB does not depend on the temporal correlation of the propagation channel. We show that the maximum achievable diversity of multi band UWB-MIMO system is the product of the number of transmit and receive antennas, the number of multi path components
Results 1 - 10 of 126