TY - GEN
T1 - Energy conserving model for the channel power-gain in wireless multi-user downlink scenarios
AU - Ivrlač, Michel T.
AU - Nossek, Josef A.
PY - 2008
Y1 - 2008
N2 - Established models for the prediction of channel power gain in radio communication systems have got a slight drawback which grows into a real problem in a theoretical large system analysis of downlink scenarios, where the number of user terminals is allowed to grow unboundedly. The problem is that the model predictions of channel power gain do not take into account the existence of additional receivers. As the number of terminals grows unboundedly, the sum of the predicted receive powers increases unboundedly, and eventually becomes larger than the total transmit power. In a passive propagation medium - like air - such model errors conflict with the principle of conservation of energy, when applied to asymptotic large system analysis. We propose a simple generic modification which - while applicable to any of the existent channel power gain models - corrects this model error and is intended as a first step towards the provision of a channel power gain model that allows for a meaningful large system analysis. We present a fully worked out example which, besides providing interesting insight, is also intended to demonstrate that mathematical tractability is not seriously affected by the proposed modification.
AB - Established models for the prediction of channel power gain in radio communication systems have got a slight drawback which grows into a real problem in a theoretical large system analysis of downlink scenarios, where the number of user terminals is allowed to grow unboundedly. The problem is that the model predictions of channel power gain do not take into account the existence of additional receivers. As the number of terminals grows unboundedly, the sum of the predicted receive powers increases unboundedly, and eventually becomes larger than the total transmit power. In a passive propagation medium - like air - such model errors conflict with the principle of conservation of energy, when applied to asymptotic large system analysis. We propose a simple generic modification which - while applicable to any of the existent channel power gain models - corrects this model error and is intended as a first step towards the provision of a channel power gain model that allows for a meaningful large system analysis. We present a fully worked out example which, besides providing interesting insight, is also intended to demonstrate that mathematical tractability is not seriously affected by the proposed modification.
UR - http://www.scopus.com/inward/record.url?scp=49749136181&partnerID=8YFLogxK
U2 - 10.1109/WSA.2008.4475546
DO - 10.1109/WSA.2008.4475546
M3 - Conference contribution
AN - SCOPUS:49749136181
SN - 9781424417575
T3 - 2008 International ITG Workshop on Smart Antennas, WSA 2008
SP - 120
EP - 124
BT - 2008 International ITG Workshop on Smart Antennas, WSA 2008
T2 - 2008 International ITG Workshop on Smart Antennas, WSA 2008
Y2 - 26 February 2008 through 27 February 2008
ER -