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Trade-Off Between Frequency Diversity Gain and Frequency-Selective Scheduling Gain in OFDMA Systems with Spatial Diversity

IEEE Communications Letters, 2007
OFDMA systems inherently take advantages of both frequency diversity gain and frequency-selective scheduling gain. The former is achieved by allocating a user the subcarriers widely scattered over an entire frequency band, while the latter is achieved by allocating a user the subcarriers consecutively located within a subband of a limited bandwidth ...
openaire   +1 more source

Diversity gains and clustering in wireless relaying

International Symposium onInformation Theory, 2004. ISIT 2004. Proceedings., 2004
We consider a wireless system consisting of one source, one destination and M relays. Assuming path loss and Rayleigh fading, we use the cutset upper bound to show that no matter where the relays are located, the maximum diversity one can obtain is M+1. However, one can achieve a higher diversity gain, namely /spl lfloor/(M+2/2)/sup 2//spl rfloor/, if /
M. Yuksel, E. Erkip
openaire   +1 more source

Interference diversity gain in frequency hopping GSM

1995 IEEE 45th Vehicular Technology Conference. Countdown to the Wireless Twenty-First Century, 2002
Wideband random frequency hopping is one of the key properties of GSM in an evolution towards PCS (personal communication services). Random frequency hopping introduces diversity on the transmission link, which improves the performance. In this paper, the impact of interference diversity in GSM is analyzed by means of bit level simulations of the GSM ...
H. Olofsson, J. Naslund, J. Skold
openaire   +1 more source

Performance gains through diverse top management teams

Team Performance Management: An International Journal, 2004
Emerging and future changes in workforce diversity have caused a need to examine the potential impact of these changes on all areas of the firm. One area of special interest is that of top management team (TMT) diversity. With more diverse TMTs on the horizon, there is potential for both conflict and performance gains as a result of increased diversity
Charles M. Carson   +2 more
openaire   +1 more source

An empirical relationship for path diversity gain

IEEE Transactions on Antennas and Propagation, 1976
Existing 15.3 and 16 GHz path diversity gain data for earth-space propagation paths are used to generate an empirical relationship for diversity gain as a function of terminal separation distance and single terminal fade depth. The agreement between the resulting closed form expression and the data is within 0.75 dB in all cases.
openaire   +1 more source

GSM Multi Antenna Path Diversity Gain Measurement

2008 14th Conference on Microwave Techniques, 2008
GSM technology usually uses two antenna paths for uplink on base station. In special cases there are available four antenna paths due to power requirement in downlink on base station for one cell. Because two antenna paths are still necessary for uplink side (reception part), it is appropriate to know, what antenna paths usage is optimum.
openaire   +1 more source

DIVERSITY GAIN MEASUREMENTS FOR BODY-CENTRIC COMMUNICATION SYSTEMS

2008
In this paper, the implementation of diversity schemes for on-body communication systems at 2.4GHz, 5.8 GHz and 10GHz is investigated. In these systems both the transmitter and the receiver are placed on the body and at a distance that depends on the application in use.
A. A. SERRA   +5 more
openaire   +2 more sources

Racial and socioeconomic disparities in lung cancer screening in the United States: A systematic review

Ca-A Cancer Journal for Clinicians, 2021
Ernesto Sosa   +2 more
exaly  

Prevotella diversity, niches and interactions with the human host

Nature Reviews Microbiology, 2021
Adrian Tett   +2 more
exaly  

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