Method of determining an acquisition indicator bit in a communication system
Номер патента: EP1794943A2
Опубликовано: 13-06-2007
Автор(ы): Joon-Hwa Chun
Принадлежит: Sandbridge Technologies Inc
Опубликовано: 13-06-2007
Автор(ы): Joon-Hwa Chun
Принадлежит: Sandbridge Technologies Inc
Реферат: A method of determining an acquisition indicator bit AIs, at a receiver in a communication system which includes receiving multiplexed acquisition indicator bits y = B x AI + n, where B is the signature matrix known at both base station and UE, AI is all the acquisition indicator bits and n represents noise. Next, an estimated value of the acquisition indicator bit AÎMMSE (s) as a function of formula (I) is calculated, where BT (s,.) is the s-th row vector of the transposed matrix BT for acquisition indicator bit AIs,. Finally, the acquisition indicator bit AIS is set as follows: AIs. =-1, if AÎ MMSE (s) < R , AIS=0, if R ≤ AÎ, MMSE SE (s) < U ,AIs=1, if AÎ MMSE (s) ≥ U, where R and U are decision thresholds.
Adaptive correlation of access in a packet-based communication system
Номер патента: EP1719307A2. Автор: Jacobus C. Haartsen. Владелец: Telefonaktiebolaget LM Ericsson AB. Дата публикации: 2006-11-08.