发明名称 |
TRANSMISSION POWER OPTIMIZATION IN OFDM WIRELESS COMMUNICATION SYSTEM |
摘要 |
<p>A method for minimizing processing and transmission power in a flexible and bidirectional OFDM wireless communication system including a MAC layer and a PHY layer, said PHY layer including a supervisor unit controlling in real time the performance of the PHY layer is disclosed. The method comprises feeding a first set of input data as to the QoS requirements at the PHY layer from the MAC layer to the supervisor unit comprising a Target Rate (required information rate), a Target BER (required Bit Error Rate) and a Max Delay (max tolerable delay); feeding a second set of input data including channel power transfer functions H = (|Hi|2(: (index i refers to the ith sub-carrier ) from PHY layer to the supervisor unit; processing the first and second set of input data for minimizing processing and transmission power in a wireless communication network system; and outputting N, modulation and coding parameters and transmission power parameters to the PHY layer. The coding parameters and transmission power parameters to the PHY layer include C: Code rate data; B: Block length data; n: data as to the number of decoding iterations; M = (Mi(: data as to a set of codes to specify the generally different constellations adopted for the different sub-channels (e.g. Mi=0 means that the ith sub-channel is OFF, different values specify constellation types in the pre-defined available set); and P = (Pi(: data as to a set of the generally different transmission powers adopted for the different sub-channels (e.g. Pi=0 means that the ith sub-channel is OFF). The method is performed in a wireless communication system, in particular in a supervisor unit.</p> |
申请公布号 |
WO2004025870(A1) |
申请公布日期 |
2004.03.25 |
申请号 |
WO2003IB03992 |
申请日期 |
2003.09.01 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;AGAROSSI, LUIGI;GIANGASPERO, LUCA;MORENA, MINTO;RAGAZZI, DIEGO |
发明人 |
AGAROSSI, LUIGI;GIANGASPERO, LUCA;MORENA, MINTO;RAGAZZI, DIEGO |
分类号 |
H04J11/00;H04B7/005;H04L1/00;H04L27/26;(IPC1-7):H04B7/005 |
主分类号 |
H04J11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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