RU97120123A - METHOD FOR RECEIVING AND SEARCHING A SIGNAL TRANSMITTED BY PACKAGES - Google Patents

METHOD FOR RECEIVING AND SEARCHING A SIGNAL TRANSMITTED BY PACKAGES

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Publication number
RU97120123A
RU97120123A RU97120123/09A RU97120123A RU97120123A RU 97120123 A RU97120123 A RU 97120123A RU 97120123/09 A RU97120123/09 A RU 97120123/09A RU 97120123 A RU97120123 A RU 97120123A RU 97120123 A RU97120123 A RU 97120123A
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RU
Russia
Prior art keywords
signal
samples
call
shift
power
Prior art date
Application number
RU97120123/09A
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Russian (ru)
Other versions
RU2157592C2 (en
Inventor
А.Зив Ноам
Падовани Роберто
А.Левин Джеффри
Д.Истон Кеннет
Original Assignee
Квэлкомм Инкорпорейтед
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Publication date
Priority claimed from US08/436,029 external-priority patent/US5710768A/en
Application filed by Квэлкомм Инкорпорейтед filed Critical Квэлкомм Инкорпорейтед
Publication of RU97120123A publication Critical patent/RU97120123A/en
Application granted granted Critical
Publication of RU2157592C2 publication Critical patent/RU2157592C2/en

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Claims (2)

1. Способ приема сигнала, содержащего группу сигналов вызовов с расширенным спектром, совместно использующих общую полосу частот, в котором каждый из указанных сигналов вызовов с расширенным спектром содержит последовательность бит, закодированных в группах фиксированной длины в виде последовательности символов, причем последовательность указанных символов группируется вместе в группы управления мощностью, где каждый символ в общей группе управления мощностью передается с общим уровнем мощности, и указанные группы управления мощностью передаются в пакетах, и выделения одного из указанных сигналов вызова из указанной группы для определения уровня сигнала вызова с временным сдвигом из-за задержки на трассе распространения по отношению к опорному времени с нулевым сдвигом, отличающийся тем, что способ включает этапы, при которых осуществляют запоминание бит данных псевдошумовой последовательности (ПСП) в буфере ПСП; запоминание первого принятого набора выборок сигналов вызовов в буфере выборок, имеющем ограниченную емкость; сжатие набора первой фиксированной длины из указанных выборок сигналов вызовов из буфера выборок, соответствующих первому времени задержки на трассе распространения, с помощью первого набора бит данных ПСП из буфера ПСП для получения первого сжатого выходного сигнала; запоминание второго принятого набора выборок сигналов вызовов в буфере выборок; и сжатие набора второй фиксированной длины из выборок сигналов вызовов из буфера выборок, соответствующих второму времени задержки на трассе распространения, с помощью первого набора бит данных ПСП из указанного буфера ПСП для получения второго сжатого выходного сигнала; при этом набор второй фиксированной длины из выборок сигналов вызовов содержит большое число таких же выборок сигналов вызовов, что и набор первой фиксированной длины из выборок сигналов вызовов, длина первого и второго принятых наборов выборок сигналов вызовов является частью фиксированной длины набора первой и второй фиксированный длины из выборок сигналов вызовов; причем этапы запоминания набора первой и второй фиксированной длины из выборок сигналов вызовов и этапы сжатия набора первой и второй фиксированной длины из выборок сигналов вызовов выполняются независимо от вероятности того, что один из сигналов вызовов содержит одну из групп управления мощностью.1. A method of receiving a signal containing a group of spread spectrum calling signals sharing a common frequency band in which each of said spread spectrum calling signals contains a sequence of bits encoded in fixed length groups as a sequence of characters, the sequence of these characters being grouped together to power control groups, where each symbol in a common power control group is transmitted with a common power level, and said power control groups Tews are transmitted in packets, and extracting one of the indicated ringing signals from the indicated group to determine the level of the ringing signal with a time shift due to a delay on the propagation path with respect to the reference time with a zero shift, characterized in that the method includes the steps of storing data bits of the pseudo-noise sequence (SRP) in the SRP buffer; storing the first received set of call signal samples in a sample buffer having a limited capacity; compressing a set of a first fixed length from said samples of call signals from a sample buffer corresponding to a first delay time on a propagation path using a first set of memory bandwidth data bits from the memory bandwidth buffer to obtain a first compressed output signal; storing the second received set of call signal samples in the sample buffer; and compressing a second fixed length set of call signal samples from a sample buffer corresponding to a second delay time on the propagation path using a first set of SRP data bits from said SRP buffer to obtain a second compressed output signal; the second fixed length set of call signal samples contains a large number of the same call signal samples as the first fixed length set of call signal samples, the length of the first and second received sets of call signal samples is part of the fixed length of the first and second fixed length sets of call signal samples; moreover, the steps of storing a set of first and second fixed lengths from samples of call signals and the steps of compressing a set of first and second fixed lengths from samples of call signals are performed regardless of the likelihood that one of the call signals contains one of the power control groups. 2. Способ приема сигнала, содержащего группу сигналов вызовов с расширенным спектром, совместно использующих общую полосу частот, и выделения первого сигнала из группы сигналов с расширенным спектром для определения уровня сигнала с временным сдвигом из-за задержки на трассе расширения по отношению к опорному времени с нулевым сдвигом первого сигнала, причем первый сигнал содержит последовательность символов, которая группируется вместе в набор символов, каждый символ в общем наборе символов передается с фиксированным уровнем мощностью, а последовательные наборы символов могут передавать с различными уровнями сигнала, причем указанные различные уровни сигнала включают в себя нулевой уровень, когда передача первого сигнала прерывается, отличающийся тем, что включает этапы, при которых осуществляют поиск первого набора выборок сигналов вызовов, соответствующего первому набору символов для первого сигнала с первым сдвигом для получения первой оценки его мощности; поиск второго набора выборок сигналов вызовов, соответствующих первому набору символов для первого сигнала с первым сдвигом для получения второй оценки его мощности; суммирование первой и второй оценок мощности для получения оценки уровня мощности набора символов с первым сдвигом; поиск третьего набора выборок сигналов вызовов, соответствующего второму набору символов для первого сигнала со вторым сдвигом для получения третьей оценки его мощности; поиск четвертого набора выборок сигналов вызовов, соответствующего второму набору символов для первого сигнала с вторым сдвигом для получения четвертой оценки его мощности и суммирование третьей и четвертой оценок мощности для получения оценки уровня мощности набора символов с вторым сдвигом; при этом первый набор символов и второй набор символов соответствуют наборам смежных во времени символов, причем этапы поиска выполняются непрерывно независимо от фиксированного уровня мощности. 2. A method of receiving a signal containing a group of spread spectrum call signals sharing a common frequency band and extracting a first signal from a spread spectrum group of signals to determine a signal level with a time offset due to a delay on the spread path relative to the reference time, zero shift of the first signal, and the first signal contains a sequence of characters that are grouped together into a set of characters, each character in the common character set is transmitted with a fixed power level y, and consecutive symbol sets can transmit with different signal levels, and these various signal levels include a zero level when the transmission of the first signal is interrupted, characterized in that it includes the steps of searching for the first set of samples of call signals corresponding to the first set characters for the first signal with a first shift to obtain a first estimate of its power; searching for a second set of samples of call signals corresponding to the first set of characters for the first signal with a first shift to obtain a second estimate of its power; summing up the first and second power estimates to obtain an estimate of the power level of the symbol set with the first shift; searching for a third set of call signal samples corresponding to a second set of symbols for the first signal with a second shift to obtain a third estimate of its power; searching for a fourth set of call signal samples corresponding to the second set of symbols for the first signal with a second shift to obtain a fourth estimate of its power and summing the third and fourth power estimates to obtain an estimate of the power level of the symbol set with the second shift; wherein the first set of symbols and the second set of symbols correspond to sets of symbols adjacent in time, wherein the search steps are performed continuously regardless of a fixed power level.
RU97120123/09A 1995-05-05 1996-05-02 Method for reception and search of packet- switched signal RU2157592C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US436,029 1995-05-05
US08/436,029 US5710768A (en) 1994-09-30 1995-05-05 Method of searching for a bursty signal

Publications (2)

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RU97120123A true RU97120123A (en) 2000-01-10
RU2157592C2 RU2157592C2 (en) 2000-10-10

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US (2) US5710768A (en)
EP (1) EP0824802B1 (en)
JP (1) JP3388754B2 (en)
KR (1) KR100380427B1 (en)
CN (1) CN1099171C (en)
AR (1) AR001852A1 (en)
AT (1) ATE227481T1 (en)
AU (1) AU699159B2 (en)
BR (1) BR9608287A (en)
DE (1) DE69624698T2 (en)
ES (1) ES2184871T3 (en)
FI (1) FI113820B (en)
HK (1) HK1017523A1 (en)
IL (1) IL118116A (en)
MX (1) MX9708514A (en)
MY (1) MY113603A (en)
RU (1) RU2157592C2 (en)
TW (1) TW297974B (en)
WO (1) WO1996035268A1 (en)
ZA (1) ZA963188B (en)

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