JPH06334575A - Spread spectrum communication reception equipment - Google Patents

Spread spectrum communication reception equipment

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Publication number
JPH06334575A
JPH06334575A JP12124993A JP12124993A JPH06334575A JP H06334575 A JPH06334575 A JP H06334575A JP 12124993 A JP12124993 A JP 12124993A JP 12124993 A JP12124993 A JP 12124993A JP H06334575 A JPH06334575 A JP H06334575A
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signal
output
diversity
signals
band
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JP12124993A
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Japanese (ja)
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Eisuke Kudo
Yasuo Suzuki
栄亮 工藤
康夫 鈴木
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Nippon Telegr & Teleph Corp <Ntt>
日本電信電話株式会社
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/40According to the transmission technology
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/40According to the transmission technology
    • Y02D70/44Radio transmission systems, i.e. using radiation field
    • Y02D70/442Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
    • Y02D70/444Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas

Abstract

PURPOSE: To improve diversity reception characteristics by selecting an optimum diversity branch which has large signal electric power on the basis of an inverse spreader output as a selection reference.
CONSTITUTION: Inverse diffusers 13a and 13b which convert desired waves of spread spectrum received signals into narrow-band signals are provided for the outputs of two receivers 12a and 12b which are connected to antennas 11a and 11b and convert the frequency bands of the received signals from a radio frequency band to an intermediate frequency band or base band. Then the equipment is equipped with a switch 14 as a diversity receiving means which selects and demodulates one output signal that is larger in signal electric power between the output signals of the inverse spreaders 13a and 13b and a demodulator 15 which demodulates the output signal of the switch 14. Here, diversity processing is performed on the basis of the output signal, generated by inversely spreading the output of the receiver, as the selection reference, thereby selecting the optimum diversity branch or performing composite diversity processing with a maximum signal-to-noise electric power ratio.
COPYRIGHT: (C)1994,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、送信信号の情報信号に対して高速な信号速度を有する拡張符号を乗じて広帯域に拡散された直接拡散スペクトラム拡散送信信号を受信するスペクトラム拡散通信の受信装置に関し、特に受信装置で複数のアンテナを備えてダイバーシチ受信を行う受信装置に関する。 The present invention relates to a receiving apparatus of spectrum spread communication for receiving direct sequence spread spectrum transmission signal spread over a wide band by multiplying the extension code having a high-speed signal rates for the information signals of the transmission signal It relates to a receiving apparatus that performs diversity reception comprises a plurality of antennas, especially in the receiving apparatus.

【0002】 [0002]

【従来の技術】図6は、従来のスペクトラム拡散通信におけるダイバーシチ受信装置の構成例を示すものである。 BACKGROUND ART FIG. 6 shows a configuration example of a diversity receiver in a conventional spread spectrum communication.

【0003】この受信装置は、二つのアンテナ61a、 [0003] The receiver, two of the antenna 61a,
61bと、それぞれのアンテナに接続され無線周波数帯の無線周波数から中間周波数帯またはベースバンド帯に変換する二つの受信機62a、62bを備え、この二つの受信機62a、62bで変換された受信信号のうち受信機出力の大きい一方の信号を選択する切り替え器63 61b and two receivers 62a which are connected to the respective antenna to convert the radio frequency of the radio frequency band to an intermediate frequency band or baseband band, equipped with 62b, the two receivers 62a, converted received signal 62b switch 63 for selecting the larger one of the signal output of the receiver of the
と、この切り替え器63の出力を狭帯域の信号に逆拡散する逆拡散器64と、この逆拡散された狭帯域信号を復調する復調器65とを備えて構成されている。 When, a despreader 64 for despreading the output of the switch 63 to the narrow band signal is constructed by a demodulator 65 for demodulating the narrowband signal this despread.

【発明が解決しようとする課題】この図6の受信装置の受信機出力のスペクトラム例を図7に示す。 [Problems that the Invention is to Solve shows a spectrum example of the receiver output of the receiver of FIG. 6 in FIG. この図7の(A)は受信機62aの出力のスペクトラムを表し、また(B)は受信機62bの出力のスペクトラムを表す。 (A) of FIG. 7 represents the spectrum of the output of the receiver 62a, also (B) represents the spectrum of the output of the receiver 62b.
受信機の出力信号中に干渉波が存在する場合には図7に示すように、干渉波の電力が大きいと、受信機出力の大きい方が希望波信号が小さくなる場合が生ずる。 As is shown in Figure 7 when the interference wave is present in the output signal of the receiver, the power of the interference wave is larger than that of the receiver output greater occurs is when the desired signal is reduced. したがって、従来の技術では、切り替え器63で受信機出力の大きい一方を選択して出力するダイバーシチを行っているので、希望波電力の大きい最適な受信機出力を選択できなくなり、ダイバーシチによる伝送特性の改善が得られなくなる問題があった。 Thus, in the prior art, since the performing diversity for selecting and outputting one of the receiver output greater in the switch 63, it can not be selected large optimal receiver output of the desired signal power, the transmission characteristics due to diversity improvement there has been a problem that can not be obtained.

【0004】本発明は上述の問題を解決するもので、受信機の出力を逆拡散した出力信号を選択基準としてダイバーシチ処理を行うことにより、最適なダイバーシチブランチを選択あるいは最大信号対雑音電力比の合成ダイバーシチを行うことができるダイバーシチ特性を改善した受信装置を提供することを目的とする。 [0004] The present invention is intended to solve the above problems, by performing diversity processing output signals by despreading the output of the receiver as a selection criterion, the selection or maximum signal-to-noise power ratio optimum diversity branches performing the combining diversity and to provide a receiving apparatus with improved diversity properties that can.

【0005】 [0005]

【課題を解決するための手段】本発明の第一の観点は、 Means for Solving the Problems A first aspect of the present invention,
情報信号に対して情報信号よりも高速な信号速度を有する拡散信号を乗ずることにより送信信号のスペクトラムが広帯域に拡散された直接拡散スペクトラム拡散通信方式の受信装置であり、複数のアンテナと、この複数のアンテナのそれぞれに接続され、受信信号の周波数帯を無線周波数帯から中間周波数帯またはベースバンド帯に変換する複数の受信機と、この受信機の出力のうち信号電力の大きい一つの受信機の出力を選択して復調するダイバーシチ処理手段とを備えたスペクトラム拡散通信受信装置において、前記複数の受信機のそれぞれの出力に接続されスペクトラム拡散された受信信号の希望波を狭帯域信号に変換する逆拡散器を備え、前記ダイバーシチ処理手段は、この逆拡散器の出力信号のうち信号電力の大きい一つを選択す Than the information signal to the information signal is a receiving apparatus for direct sequence spread spectrum spread communication system spectrum is spread over a wide band of the transmission signal by multiplying the spread signal with a high-speed signal speeds, and a plurality of antennas, the plurality of it is connected to a respective antenna, and a plurality of receivers for converting a frequency band of the received signal from the radio frequency band to an intermediate frequency band or baseband band, a large one receiver signal power of the output of the receiver in spread spectrum communication receiver including a diversity processing unit for demodulating selects the output, the inverse of converting the desired signal of the connected spread spectrum received signal to the respective outputs of the plurality of receivers to a narrowband signal comprising a diffuser, said diversity processing unit, select the larger one of the signal power of the output signals of the despreaders 選択ダイバーシチ受信手段を含むことを特徴とする。 Characterized in that it comprises a selection diversity receiver.

【0006】また第二の観点は、レイク合成器を用いる装置であり、複数の受信機のそれぞれの出力に設けられたスペクトラム拡散された受信信号の希望波を狭帯域信号に変換する逆拡散器と、この逆拡散器の出力信号に対して先行波信号と遅延波信号とが信号電力対雑音電力比が最大になるように合成する複数のレイク合成器とを備え、ダイバーシチ処理手段は、この複数のレイク合成器の出力信号のうち信号電力の大きい一つを選択する選択ダイバーシチ受信手段を含むことを特徴とする。 [0006] The second aspect is an apparatus using a rake combiner, a despreader for converting the desired signal of the spread spectrum received signal is provided to each of the outputs of the plurality of receivers to a narrowband signal When, a plurality of rake combiner for combining as delayed wave signal and the signal power to noise power ratio between the preceding wave signal the output signal of the despreader becomes maximum diversity processing means, this characterized in that it comprises a selective diversity receiving means for selecting a larger one of the signal power of the plurality of rake combiner output signal.

【0007】さらに第三の観点は、合成ダイバーシチを行う装置であり、複数の受信機のそれぞれの出力に接続されスペクトラム拡散された受信信号の希望波を狭帯域信号に変換する逆拡散器を備え、この複数の逆拡散器の出力信号に対して信号電力対雑音電力比が最大になるようにダイバーシチ合成する合成ダイバーシチ受信手段を含むことを特徴とする。 Furthermore a third aspect is a device for combining diversity, comprises a despreader for converting the desired wave of each being connected to the output spread spectrum received signals of a plurality of receivers for narrowband signal characterized in that the signal power to noise power ratio for the output signals of the plurality of despreaders comprises combining diversity reception means for diversity combining so as to maximize.

【0008】 [0008]

【作用】図8および図9を参照して本発明の作用を説明する。 [Action] With reference to FIGS. 8 and 9 illustrating the operation of the present invention.

【0009】図8に示すように送信局において、情報信号に対して情報信号よりも高速な信号速度を有する拡散符号を乗ずることにより送信信号のスペクトラムを広帯域に拡散させた直接拡散スペクトラム信号を受信局において狭帯域化した逆拡散出力のスペクトラムは、逆拡散を行うことにより希望波のスペクトラムは狭帯域に集中するが、干渉波のスペクトラムは拡がったままとなる。 [0009] In the transmitting station, as shown in FIG. 8, receives a direct spread spectrum signal obtained by spread spectrum transmission signal to a wide band by multiplying a spreading code having a high-speed signal rate than the information signal to the information signal narrowing the spectrum despread output in the station is the spectrum of the desired signal by performing despreading is concentrated to a narrow band, the spectrum of the interference waves will remain spread.
したがって受信機出力を逆拡散した出力信号を選択基準とすることにより干渉波が存在する場合においても最適なダイバーシチブランチを選択することができる。 Therefore it is possible to select an optimum diversity branch in a case where the interference wave exists by the receiver output despread output signal selection criteria.

【0010】さらに、無線区間における伝搬遅延によって遅延波が生じた場合には図9に示すように逆拡散器出力に遅延波が生ずる。 Furthermore, the delay wave despreader output as shown in FIG. 9 when the delayed wave is caused by propagation delay in the radio section occurs. 逆拡散器の出力をレイク合成器において先行波と遅延波が信号対雑音電力が最大となるように合成し、このレイク合成器の出力信号を選択基準とすることにより、遅延波がある場合においても最適なダイバーシチブランチを選択することができる。 By the output of the despreader preceding wave and the delayed wave is synthesized as signal-to-noise power is maximized at the rake combiner, a selection criterion the output signal of the rake combiner, when there is a delayed wave it is also possible to select the optimal diversity branch.

【0011】また、ダイバーシチ合成においても信号電力対雑音電力比が最大になるように逆拡散器の出力を合成することによってもダイバーシチ特性を改善できる。 Further, even if the signal power to noise power ratio at the diversity combining can improve diversity characteristics by combining the outputs of the despreaders to maximize.

【0012】 [0012]

【実施例】以下図面を参照して本発明の実施例を説明する。 EXAMPLES Referring to the drawings illustrating the embodiments of the present invention.

【0013】(第一実施例)図1は本発明の第一実施例の受信装置の構成を示すブロック図である。 [0013] (First Embodiment) FIG. 1 is a block diagram showing the configuration of a receiving apparatus of a first embodiment of the present invention.

【0014】本実施例の受信装置は、情報信号に対して情報信号よりも高速な信号速度を有する拡散信号を乗ずることにより送信信号のスペクトラムが広帯域に拡散された直接拡散スペクトラム拡散通信方式の受信装置であり、アンテナ11a、11bと、このアンテナ11a、 [0014] receiving device of this embodiment, the reception of the direct spread spread spectrum communication system where a spectrum of the transmitted signal is spread over a wide band by multiplying the spread signal with a high-speed signal rate than the information signal to the information signal a device, an antenna 11a, a 11b, this antenna 11a,
11bのそれぞれに接続され、受信信号の周波数帯を無線周波数帯から中間周波数帯またはベースバンド帯に変換する二つの受信機12a、12bと、この受信機の出力のうち信号電力の大きい一つの受信機の出力を選択して復調するダイバーシチ処理手段とを備えたスペクトラム拡散通信受信装置において、本発明の特徴として、複数の受信機12a、12bのそれぞれの出力にスペクトラム拡散された受信信号の希望波を狭帯域信号に変換する逆拡散器13a、13bが設けられ、この逆拡散器1 Connected to each of the 11b, the two receivers 12a which converts the frequency band of the received signal from the radio frequency band to an intermediate frequency band or baseband, and 12b, a large one reception signal power of the output of the receiver in spread spectrum communication receiver including a diversity processing unit for demodulating selects the output of the machine, as a feature of the present invention, the desired wave of the plurality of receivers 12a, spread spectrum received signal to the respective outputs of 12b the narrow despreader 13a for converting the band signals, 13b are provided, the despreader 1
3a、13bの出力信号のうち信号電力の大きい一つを選択して復調する選択ダイバーシチ受信手段として切り替え器14とこの切り替え器14の出力信号を復調する復調器15を備える。 3a, comprises a switch 14 and demodulator 15 for demodulating an output signal of the switch 14 as a selective diversity receiving means selects and demodulates the larger one signal power among 13b output signals.

【0015】この構成により、図8に示すように、希望波である信号電力の大きい方の受信機の出力を選択して最適なダイバーシチブランチを選択することができる。 [0015] With this configuration, as shown in FIG. 8, it is possible to select an optimum diversity branch by selecting the output of the larger receiver signal power is desired wave.

【0016】(第二実施例)図2はレイク合成器を用いた本発明の第二実施例の構成を示すブロック図である。 [0016] (Second Embodiment) FIG 2 is a block diagram showing a configuration of a second embodiment of the present invention using a rake synthesizer.

【0017】この第二実施例は、アンテナ21a、21 [0017] In this second embodiment, the antenna 21a, 21
bと、このアンテナ21a、21bのそれぞれに接続され、受信信号の周波数帯を無線周波数帯から中間周波数帯またはベースバンド帯に変換する受信機22a、23 b and, the antenna 21a, are connected to each 21b, receiver 22a for converting the frequency band of the received signal from the radio frequency band to an intermediate frequency band or baseband band, 23
bと、この受信機22a、23bのそれぞれの出力に設けられたスペクトラム拡散された受信信号の希望波を狭帯域信号に変換する逆拡散器23a、23bと、この逆拡散器の出力信号に対して先行波信号と遅延波信号とが信号電力対雑音電力比が最大になるように合成するレイク合成器24a、24bと、このレイク合成器24a、 And b, the receiver 22a, a despreader 23a that converts the desired signal of the respective spread spectrum received signal provided at the output of 23b narrowband signal, and 23b, to the output signal of the despreader rake combiner 24a, 24b and, the rake synthesizer 24a a preceding wave signal and the delayed wave signal signal power to noise power ratio is synthesized to maximize Te,
24bの出力信号のうち信号電力の大きい一つを選択する切り替え器25と、この切り替え器25の出力を復調する復調器15を備える。 A switch 25 for selecting the larger one of the signal power of the 24b output signals, comprises a demodulator 15 for demodulating an output of the switch 25.

【0018】この第二実施例で用いられるレイク合成器24は、文献 横山光雄著“スペクトル拡散通信システム”pp.524-538 科学技術出版社 1988 等に記述されているレイク受信方式による合成器である。 The rake combiner 24 used in this second embodiment, in the synthesizer according to rake reception method described in the literature Author Mitsuo Yokoyama "spread spectrum communication system" Pp.524-538 Science Publishers 1988, etc. is there.

【0019】ここで図3にレイク合成器24の構成を示して説明する。 The depicted and described with here configuration of the rake combiner 24 in Figure 3. このレイク合成器24は、タップ付き遅延回路33とその出力とタップ係数発生器32との出力を乗算する4つの乗算器34と、この乗算器34の出力を加算する加算器35を備える。 The rake combiner 24 is provided with four multipliers 34 for multiplying the output of the tapped delay circuit 33 and its output and the tap coefficient generator 32, an adder 35 for adding the output of the multiplier 34. なお、タップ付き遅延回路33の上部に逆拡散器23aの出力波形を31として示す。 Incidentally, it shows the output waveform of the despreaders 23a as 31 on the top of the tapped delay circuit 33.

【0020】逆拡散器23aの出力信号はタップ付き遅延回路33に入力され、タップ付き遅延回路33で遅延された出力は乗算器34にそれぞれ入力される。 The output signal of the despreader 23a is input to a tapped delay circuit 33, an output delayed by the tapped delay circuit 33 is inputted to the multiplier 34. タップ係数発生器32は加算器35の出力において信号電力対雑音電力比が最大になるように設定されたタップ係数を発生し、乗算器34に入力される。 Tap coefficient generator 32 generates a tap coefficient signal power to noise power ratio at the output is set to be the largest of the adder 35 is input to the multiplier 34. 乗算器34では前記係数発生器32とタップ付き遅延回路33の出力が乗算される。 The multiplier 34 the output of the coefficient generator 32 and the tapped delay circuit 33 is multiplied. その乗算器34の出力は加算器35に入力されてこの加算器35で全ての入力が加算され切り替え器に出力される。 The output of the multiplier 34, all inputs are input to the adder 35 in the adder 35 is output to the switch are added. このレイク合成器24の出力の信号電力の大きい方を選択することにより最適なダイバーシチブランチを選択することができる。 Optimum diversity branch by selecting the larger signal power of the output of the rake combiner 24 may be selected.

【0021】(第三実施例)次に図4に本発明第三実施例の構成を示す。 [0021] shows the configuration of the present invention the third embodiment (the third embodiment) Next FIG. この第三実施例は第一実施例の切り替え器14に代えて信号対雑音電力比を最大になるようにダイバーシチ合成するダイバーシチ合成器44を用いるものである。 The third embodiment is to use a diversity combiner 44 for diversity combining so as to maximize the signal-to-noise power ratio in place of the switch 14 of the first embodiment.

【0022】すなわち、アンテナ41a、41bで受信された信号はそれぞれ受信機42a、42bに入力されて周波数変換される。 [0022] That is, the antenna 41a, each received signal receiver 42a in 41b, is input is frequency converted to 42b. 受信機42a、42bの出力は逆拡散器43a、43bに入力されて、希望波の帯域を狭帯域にする逆拡散が行われる。 Receiver 42a, the output of 42b is input to the despreader 43a, 43b, despreading is performed to narrow-band band of the desired wave. 逆拡散器43a、43b Despreader 43a, 43b
の出力はダイバーシチ合成器44に入力されて信号対雑音電力比が最大になるようにダイバーシチ合成が行われる。 The output is input to the signal-to-noise power ratio diversity combiner 44 is made diversity combining so as to maximize. このダイバーシチ合成器44の出力は復調器45に入力されて復調される。 The output of the diversity combiner 44 is demodulated is input to a demodulator 45.

【0023】ここで図5にダイバーシチ合成器44の構成例を示す。 [0023] Here illustrating a configuration example of the diversity combiner 44 in FIG. このダイバーシチ合成器は二つの逆拡散器43の出力が入力されるタップ付き遅延回路53、5 The diversity combiner tapped delay circuit output of the two despreader 43 is input 53,5
4、タップ係数発生器55と、それぞれのタップ付き遅延回路53、54の出力とタップ係数を乗算する乗算器56、57、これらの乗算器の出力を加算する加算器5 4, a tap coefficient generator 55, a multiplier 56 and 57 multiplies the output and tap coefficients of each tapped delay circuits 53 and 54, an adder 5 for adding the outputs of these multipliers
8とを備える。 And a 8.

【0024】タップ付き遅延回路53には逆拡散器43 [0024] The tapped delay circuit 53 despreader 43
aから51に示す波形が入力され、タップ付き遅延回路54には逆拡散器43bから52に示す波形が入力される。 Waveform shown from a 51 is input to the tapped delay circuit 54 is the waveform shown in 52 from despreader 43b is input. タップ係数発生器55では加算器58の出力において信号電力対雑音電力比が最大になるように設定されたタップ係数を発生し、乗算器56、57に出力する。 Generating a tap coefficient signal power to noise power ratio is set so as to maximize the output of the tap coefficient generator 55 in the adder 58, and outputs to the multiplier 56 and 57. 乗算器56、57ではタップ付き遅延回路53、54の出力とタップ係数発生器55の出力とが乗算され、加算器58はこの乗算器56、57の出力を全て加算して合成ダイバーシチ出力として復調器に出力する。 The outputs of the tap coefficient generator 55 of the multiplier 56 and 57 tapped delay circuits 53 and 54 in are multiplied, the adder 58 is demodulated as combining diversity output by adding all the outputs of the multiplier 56 and 57 and outputs it to the vessel.

【0025】なお、上記第一実施例ないし第三実施例ではアンテナが2本の場合について説明したが、3本以上ある場合でも同様の効果を実現できる。 It should be noted, in the first embodiment to the third embodiment has been described antennas is two, it can be realized the same effect even if more than three.

【0026】 [0026]

【発明の効果】以上説明したように、逆拡散器出力を選択基準とすることにより、信号電力の大きい最適なダイバーシチブランチを選択することができ、ダイバーシチ受信特性を従来のものに比べて改善することができる。 As described in the foregoing, by the selection criteria of the despreader output, it can be selected greater optimal diversity branch signal power is improved over the diversity reception properties to those of conventional be able to.

【0027】また、干渉波のほかに伝搬遅延による遅延波が存在する場合においても、逆拡散出力をレイク合成し、そのレイク合成後の出力信号を選択基準とすることにより最適なダイバーシチブランチを選択して受信特性を改善することができる。 Further, when there are delayed waves in addition to the propagation delay of the interference waves even, selects the optimal diversity branch by despreading output by RAKE combining, and selection criteria the output signal after the rake combination it is possible to improve reception characteristics by.

【0028】さらに複数の逆拡散器の出力波形を信号電力対雑音電力比が最大になるように最大比合成ダイーバシチを行うことができるため、選択ダイバーシチより改善された特性を得ることもできる。 [0028] To further signal to noise ratio output waveforms of a plurality of despreaders can perform maximum ratio combining Daibashichi to maximize, can also be obtained is improved over the selection diversity characteristics.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明第一実施例の構成を示すブロック図。 [1] The present invention block diagram showing the configuration of the first embodiment.

【図2】本発明第二実施例の構成を示すブロック図。 [2] The present invention block diagram showing the configuration of the second embodiment.

【図3】本発明第二実施例のレイク合成器の構成を示す図。 [3] The present invention shows the structure of a rake combiner of the second embodiment.

【図4】本発明第三実施例の構成を示す図。 4 is a diagram showing the configuration of the present invention the third embodiment.

【図5】本発明第三実施例のダイバーシチ合成器の構成を示す図。 [5] The present invention illustrates a configuration of a diversity combiner of the third embodiment.

【図6】従来の受信装置を説明する図。 Figure 6 illustrates a conventional receiver.

【図7】従来の受信装置の受信機出力のスペクトラムの例を示す図。 7 is a diagram showing an example of a spectrum of the receiver output of the conventional receiver.

【図8】逆拡散器出力のスペクトラムの例を示す図。 8 is a diagram showing an example of a spectrum despreader output.

【図9】逆拡散器出力の時間波形例を示すデータ。 [9] data indicating the time waveform example of the despreader output.

【符号の説明】 DESCRIPTION OF SYMBOLS

11、21、41、61 アンテナ 12、22、42、62 受信機 13、23、43、64 逆拡散器 14、25、63 切り替え器 15、26、45、65 復調器 24 レイク合成器 32、55 タップ係数発生器 33、53、54 タップ付き遅延回路 34、56、57 乗算器 35、58 加算器 44 ダイバーシチ合成器 11,21,41,61 antenna 12,22,42,62 receiver 13,23,43,64 despreader 14,25,63 switch 15,26,45,65 demodulator 24 rake combiner 32,55 with the tap coefficients generator 33,53,54 tap delay circuit 34,56,57 multiplier 35,58 adder 44 diversity combiner

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 情報信号に対して情報信号よりも高速な信号速度を有する拡散信号を乗ずることにより送信信号のスペクトラムを広帯域に拡散した直接拡散スペクトラム拡散通信方式の受信装置であり、 複数のアンテナと、 この複数のアンテナのそれぞれに接続され、受信信号の周波数帯を無線周波数帯から中間周波数帯またはベースバンド帯に変換する複数の受信機と、 この受信機の出力のうち信号電力の大きい一つの受信機の出力を選択して復調するダイバーシチ処理手段とを備えたスペクトラム拡散通信受信装置において、 前記複数の受信機のそれぞれの出力に接続されスペクトラム拡散された受信信号の希望波を狭帯域信号に変換する逆拡散器を備え、 前記ダイバーシチ処理手段は、この逆拡散器の出力信号のうち信号電力の大き 1. A than the information signal to the information signal is a receiving apparatus for direct sequence spread spectrum spread spectrum communication system that spread over a wide band of transmission signals by multiplying the spread signal with a high-speed signal speed, a plurality of antennas If, connected to each of the plurality of antennas, and a plurality of receivers for converting a frequency band of the received signal from the radio frequency band to an intermediate frequency band or baseband band, one large signal power of the output of the receiver One of the spread spectrum communication receiver including a diversity processing unit for selecting and demodulating the output of the receiver, the plurality of each of the connected spread spectrum received signal to the output of the receiver narrowband signal the desired wave of It includes a despreader for converting to the diversity processing unit, of the signal power magnitude of the output signal of the despreader 一つを選択する選択ダイバーシチ受信手段を含むことを特徴とするスペクトラム拡散通信受信装置。 Spread spectrum communication receiver apparatus which comprises a selective diversity receiving means for selecting one.
  2. 【請求項2】 情報信号に対して情報信号よりも高速な信号速度を有する拡散信号を乗ずることにより送信信号のスペクトラムを広帯域に拡散した直接拡散スペクトラム拡散通信方式の受信装置であり、 複数のアンテナと、 この複数のアンテナのそれぞれに接続され、受信信号の周波数帯を無線周波数帯から中間周波数帯またはベースバンド帯に変換する複数の受信機と、 この受信機の出力のうち信号電力の大きい一つの受信機の出力を選択して復調するダイバーシチ処理手段とを備えたスペクトラム拡散通信受信装置において、 前記複数の受信機のそれぞれの出力に接続されスペクトラム拡散された受信信号の希望波を狭帯域信号に変換する逆拡散器と、 この逆拡散器の出力信号に対して先行波信号と遅延波信号とが信号電力対雑音電力 2. A than the information signal to the information signal is a receiving apparatus for direct sequence spread spectrum spread spectrum communication system that spread over a wide band of transmission signals by multiplying the spread signal with a high-speed signal speed, a plurality of antennas If, connected to each of the plurality of antennas, and a plurality of receivers for converting a frequency band of the received signal from the radio frequency band to an intermediate frequency band or baseband band, one large signal power of the output of the receiver One of the spread spectrum communication receiver including a diversity processing unit for selecting and demodulating the output of the receiver, the plurality of each of the connected spread spectrum received signal to the output of the receiver narrowband signal the desired wave of a despreader for converting the preceding wave signal and the delayed wave signal and the signal to noise for the output signal of the despreader が最大になるように合成する複数のレイク合成器とを備え、 前記ダイバーシチ処理手段は、前記複数のレイク合成器の出力信号のうち信号電力の大きい一つを選択する選択ダイバーシチ受信手段を含むことを特徴とするスペクトラム拡散通信受信装置。 There a plurality of rake combiner for combining to maximize the diversity processing means comprise a selective diversity receiving means for selecting a larger one of the signal power of the plurality of rake combiner output signal spread spectrum communication receiver characterized by.
  3. 【請求項3】 情報信号に対して情報信号よりも高速な信号速度を有する拡散信号を乗ずることにより送信信号のスペクトラムを広帯域に拡散した直接拡散スペクトラム拡散通信方式の受信装置であり、 複数のアンテナと、 この複数のアンテナのそれぞれに接続され、受信信号の周波数帯を無線周波数帯から中間周波数帯またはベースバンド帯に変換する複数の受信機と、 この複数の受信機の出力に対してダイバーシチ処理を行って復調するダイバーシチ処理手段とを備えたスペクトラム拡散通信受信装置において、 前記複数の受信機のそれぞれの出力に接続されスペクトラム拡散された受信信号の希望波を狭帯域信号に変換する逆拡散器を備え、 前記ダイバーシチ処理手段は、前記複数の逆拡散器の出力信号に対して信号電力対雑音電力 3. a receiver of the diffused direct sequence spread spectrum spread communication system in a broadband spectrum of the transmission signal by multiplying the spread signal with a high-speed signal rate than the information signal to the information signal, a plurality of antennas If, connected to each of the plurality of antennas, diversity processing the frequency band of the received signal and the plurality of receivers to be converted to an intermediate frequency band or a baseband from a radio frequency band, the output of the plurality of receivers in spread spectrum communication receiver including a diversity processing unit for demodulating performing despreading for converting the desired signal of each of the connected spread spectrum received signal to an output of said plurality of receivers to a narrowband signal wherein the diversity processing unit, the signal power to noise power to an output signal of said plurality of despreaders が最大になるようにダイバーシチ合成する合成ダイバーシチ受信手段を含むことを特徴とするスペクトラム拡散通信受信装置。 There spread spectrum communication receiver characterized in that it comprises a combining diversity reception means for diversity combining so as to maximize.
JP12124993A 1993-05-24 1993-05-24 Spread spectrum communication reception equipment Pending JPH06334575A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998021848A1 (en) * 1996-11-14 1998-05-22 Matsushita Electric Industrial Co., Ltd. Radio communication equipment using algorithm diversity
JPH10242936A (en) * 1997-02-26 1998-09-11 Saitama Nippon Denki Kk Diversity receiver for spread spectrum communication system
US6980584B1 (en) 1998-06-02 2005-12-27 Canon Kabushiki Kaisha Reception apparatus
JP2006279624A (en) * 2005-03-30 2006-10-12 Nec Corp Receiver, its reception method, communication system and flying object
US7697643B2 (en) 1995-01-04 2010-04-13 Interdigital Technology Corporation Setting a transmission power level for a mobile unit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8340228B2 (en) 1995-01-04 2012-12-25 Intel Corporation Setting a transmission power level for a mobile unit
US8824523B2 (en) 1995-01-04 2014-09-02 Intel Corporation Setting a transmission power level for a mobile unit
US7697643B2 (en) 1995-01-04 2010-04-13 Interdigital Technology Corporation Setting a transmission power level for a mobile unit
US7961822B2 (en) 1995-01-04 2011-06-14 Interdigital Technology Corporation Setting a transmission power level for a mobile unit
WO1998021848A1 (en) * 1996-11-14 1998-05-22 Matsushita Electric Industrial Co., Ltd. Radio communication equipment using algorithm diversity
JPH10242936A (en) * 1997-02-26 1998-09-11 Saitama Nippon Denki Kk Diversity receiver for spread spectrum communication system
US6980584B1 (en) 1998-06-02 2005-12-27 Canon Kabushiki Kaisha Reception apparatus
JP2006279624A (en) * 2005-03-30 2006-10-12 Nec Corp Receiver, its reception method, communication system and flying object

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