摘要:
A channel estimation sequence including two concatenated sequences (S and G) respectively including two complementary sequences (s and g), which are extended periodically by extensions (efs, esd and egf, egd) which constitute copies of their starting part and/or ending part and which are respectively concatenated at the end and/or start of the sequence. Also, a channel estimation method including transmitting the channel estimation sequence and receiving and correlating the received signal with the first complementary sequence (s), correlating the received signal with the second complementary sequence (g), adding the results of the two correlations.
摘要:
Method for transmitting an information representative of the number of spreading codes allocated to the mobile stations in communication with a base station of a mobile telecommunication system,wherein it includes the step of:forming a word, said transmitted word, the content of which is representative of the number of spreading codes allocated,including in each transmission burst a general midamble resulting from the sum of selected midambles among all the available midambles, said selection being done by said base station in relation with said transmitted word so that a selected midamble corresponds to a binary element of said transmitted word equal to a first value and a non-selected midamble corresponds to a binary element of said transmitted word equal to second value,considering a received word the elements of which are in one-to-one relationship with the temporal positions of the estimations respectively corresponding to said available midambles.
摘要:
Method for transmitting a word representative of transmission parameters respectively allocated to the mobile stations in communication with a base station of a mobile telecommunication system, wherein it includes the step of: including, in each transmission burst a midamble resulting from the sum of selected midambles among all the available midambles, said selection being done by said base station in relation with a word so that a selected midamble corresponds to a binary element of said word equal to a first value and a non-selected midamble corresponds to a binary element of said word equal to a second value, and considering a word the elements of which are in one-to-one relationship with the temporal positions of the estimations respectively corresponding to said available midambles.
摘要:
A channel estimation sequence including two concatenated sequences (S and G) respectively including two complementary sequences (s and g), which are extended periodically by extensions (esf, esd and egf, egd) which constitute copies of their starting part and/or ending part and which are respectively concatenated at the end and/or start of the sequence. Also, a channel estimation method including transmitting the channel estimation sequence and receiving and correlating the received signal with the first complementary sequence (s), correlating the received signal with the second complementary sequence (g), adding the results of the two correlations.
摘要:
Method for transmitting an information representative of the number of spreading codes allocated to the mobile stations in communication with a base station of a mobile telecommunication system, wherein it includes the step of: forming a word, said transmitted word, the content of which is representative of the number of spreading codes allocated, including in each transmission burst a general midamble resulting from the sum of selected midambles among all the available midambles, said selection being done by said base station in relation with said transmitted word so that a selected midamble corresponds to a binary element of said transmitted word equal to a first value and a non-selected midamble corresponds to a binary element of said transmitted word equal to second value, considering a received word the elements of which are in one-to-one relationship with the temporal positions of the estimations respectively corresponding to said available midambles.
摘要:
Method for transmitting a word representative of transmission parameters respectively allocated to the mobile stations in communication with a base station of a mobile telecommunication system, wherein it includes the step of: including, in each transmission burst a midamble resulting from the sum of selected midambles among all the available midambles, said selection being done by said base station in relation with a word so that the selected midamble corresponds to a binary element of said word equal to a first value and a non-selected midamble corresponds to a binary element of said word equal to a second value, and considering a word the elements of which are in one-to-one relationship with the temporal positions of the estimations respectively corresponding to said available midambles.
摘要:
A synchronization signal used to synchronize base stations in a mobile radio telecommunication system having a first sequence followed by a second sequence, the first and second sequences being polyphase complementary sequences configured such that when the synchronization signal is correlated with a replica of the first sequence and a replica of the second sequence, and the correlation results are added exemplary synchronization results are obtained.
摘要:
Method of synchronizing base stations in a mobile radio telecommunication system, characterized in that a first base station transmits a synchronisation sequence having a first sequence followed by a second sequence, the said first and second sequences being obtained from polyphase complementary sequences and in that at least one second base station effects the correlation of the said synchronization sequence with a replica of the first sequence and a replica of the second sequence, the correlation results then being added in order to provide synchronization information.
摘要:
A method of estimating qualities of a transmission or telecommunications channel involves using a pair of complementary sequences s(n) and g(n), with n=0, 1, . . . , N−1, which have the property that the sum of their auto-correlations is a perfect Dirac function (that is, &PHgr;s,s(n)+&PHgr;g,g(n)=k·&dgr;(n)). A composite signal made up of two complementary sequences s(n) and g(n) is used, after having time multiplexed these two sequences in such a way as to exploit the property &PHgr;s,s(n)=&PHgr;g,g(n)=k·&dgr;(n). The composite signal is made up of two sequences which are concatenated with, between them, a guard interval of a duration greater than or equal to the length of the impulse response of the channel to be estimated.
摘要:
Method for transmitting a word representative of transmission parameters respectively allocated to the mobile stations in communication with a base station of a mobile telecommunication system, wherein it includes the step of: including, in each transmission burst a midamble resulting from the sum of selected midambles among all the available midambles, said selection being done by said base station in relation with a word so that a selected midamble corresponds to a binary element of said word equal to a first value and a non-selected midamble corresponds to a binary element of said word equal to a second value, and considering a word the elements of which are in one-to-one relationship with the temporal positions of the estimations respectively corresponding to said available midambles.