TW200922159A - Transmission system, transmitter, receiver and transmission method - Google Patents

Abstract

To provide a transmission system that solves the problems obstructing an achievement of a transmission scheme exhibiting a high efficiency and a large capacity and that achieves reduction in size and in power consumption. The transmission system (1) comprises a transmitter (3) that includes at least one transmitting part (9) for transmitting, from a transmission antenna (15), a transport signal obtained by modulating a source signal, and a receiver (5) that includes at least one receiving part (17) for demodulating a received signal obtained via a reception antenna (19). In this transmission system (1), a nonlinear modulation part (11) of the transmitting part (9) performs a constant envelope modulation of the source signal to obtain the transport signal, while an analog processing part (21) of the receiving part (17) converts the received signal to an IF signal and then samples the IF signal to produce a real sampled signal.

Description

200922159 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a transmission system, a transmitter, a receiver, and a transmission method, and more particularly to a transmission system having the following components: a transmitter having at least one transmitting means for transmitting a transmission signal obtained by transmitting a transmission signal by a transmitting antenna; and having at least one transmitting antenna (receiving antenna) A receiver that receives demodulated receiving means of the received signal. [Prior Art] In response to the demand for high-speed transmission, MIMO (Multi-Input Multi-Output) transmission technology using a plurality of antennas and 0FDM (0rtDM) which is good at multipath transmission are widely used. The application of the orthogonal frequency division multiplexing is performed enthusiastically (see Non-Patent Document 1). Figure 12 is a schematic block diagram of a transmission system 301 for carrying out the conventional ΜI M0 transmission technique and transmission of signals using OFDM. In the transmission system 301, the signal is transmitted by the transmitter 303 having a plurality of antennas 309 and 311 via the ΜIM0 transmission path 307 to the receiver 305 having a plurality of antennas 3 1 3 and 315. The transmitter 3 0 3 corresponds to the antenna 309 and has a linear modulation unit 3 17 and a linear amplifier unit 31 9 , and the corresponding antenna 3 1 1 has a linear modulation unit 3 2 1 and a linear 200922159 amplifier unit 323. The signal transmitted from the antenna 309 is linearly modulated by the linear modulation unit 3, for example, 〇, and the like, and is also subjected to power conversion processing by the linear amplifier unit 319. Further, the signal transmitted by the antenna 3 ι is similarly processed by the linear modulation unit 321 and the linear amplifier unit 323. The receiver 305 corresponds to the antenna 313 having a multi-value quantization unit 325 and a linear demodulation unit 327, and the corresponding day and line 315 has a multi-value quantization A"" 29 and a linear demodulation unit 331 having a chirp demodulation unit 333. The received signal received by the antenna 313 is converted into a digital signal by the multi-value quantization ... section 325. The multi-valued quantization AD unit 325 is usually implemented using an analog-digital converter (hereinafter referred to as [ADC]). The ADC is used to multiply a digital signal converted by a sampHng signal by 10 bits (b i t). The digital signal converted by the AD 325 by the multi-value quantization is linearly demodulated by the linear demodulation section 32 7 . Further, the signal received by the antenna 315 is also subjected to the same processing by the multi-value quantization AD unit 319 and the linear demodulation unit 331. The μ I M0 demodulation unit 3 3 3 is an interference component for separating the signals included in the linear demodulation by the linear demodulation units 3 2 7 and 3 3 1 . [Non-Patent Document 1] Ye (Geoffrey) Li, two other authors, ΜIM0-0FDM for Wireless Communications: Signa1 Detection With Enhanced Channel Estimation » IEEE TRANSACTIONS ON COMMUNICATIONS , Vol_50 , No.9 , September 2002 If a linear modulation method like MIM0-0FDM is used, the application of the 6 200922159 linear transmission amplifier is required (refer to the linear amplifier sections 3丨9 and 323 of Fig. 12). The application of a linear transmit amplifier can only achieve a power conversion efficiency of about 20%, which is the biggest obstacle to low power consumption. Further, if a linear modulation method such as ΜI Μ 0 - 0 F D Μ is employed, a highly accurate ADC is required on the receiver side (see the multi-valued quantization AD sections 325 and 329 of Fig. 12). The ADC requires an analog circuit such as a comparator. This analog circuit cannot be favored by LSI miniaturization. Therefore, although a pure chip function requires a large chip area, both circuit scale and power consumption are increased. Especially in the case of MIM〇, since each antenna requires the application of a high-precision ADC, an ADC with several antennas is required. Moreover, in order to maximize the performance of the high-precision ADC, an AGC (Automatic Gain Control) circuit is required, but the circuit needs to include a complicated control mechanism of the analog circuit, and this problem is not only an embarrassing situation. E-〇utput: single-input, ,, dry-out early output) increases circuit area and power consumption. In the SIS〇 (Single-Input Singl situation will also become a problem. Therefore, the invention of the rabbit and the mountain in the case of the present invention, such as a transmission system, can solve the obstacles to achieve high efficiency and large capacity transmission & ^ < The problem of miniaturization and low power consumption can be achieved. The invention relating to the item i of the patent application is a transmission means including a transmission signal having at least one transmission source transmitted by a transmission antenna. The transmitter; and at least the receiver that demodulates the received signal obtained by the receiving antenna will be subjected to the aforementioned transmission means to have the receiver of the Yu, fx Envelope modulation 7 200922159 constant envelope modulation) 丨J The aforementioned transmission signal modulation means 'the aforementioned receiving means has the first segment of the received IF (Intermediate Frequency) signal, and the IF signal is sampled An analogous digital conversion method that produces an actual sampling signal. Number conversion conversion 戍 hand ac t

Ua 1 Patent Scope Code Multiplex The invention relating to the second application of the patent scope is the transmission system of the application, wherein the aforementioned source signal is by

(c 〇 d e d i v i s i ο n m u 11 i p 1 e s i g n a 1). The invention relating to the third aspect of the patent application is the transmission system of the patent application or the second item, wherein the analog-to-digital conversion hand 1 line outputs a different value of the 1-bit Z-input-ratio digit based on the amplitude of the signal. The conversion process 'outputs a different value when the amplitude of the signal is equal to or greater than a predetermined value and is smaller than the predetermined value, or when the value is larger than a predetermined value and is equal to or smaller than a predetermined value. The invention relating to the fourth aspect of the patent application is the transmission system of the application of the patent scope or the second item, wherein the receiving means has: converting the actual sampling signal into a complex fundamental frequency signal (c〇mplex baseband signal) a second converting means; and a differentiating means for differentiating the complex fundamental frequency signal and generating a differential complex fundamental frequency signal, wherein the receiver has: receiving the differential fundamental fundamental frequency apostrophe with the complex fundamental frequency signal as a reference signal correlation Determining the relevant received output value and generating the first relevant receiving hand of the temporary determining bit, and generating a modulated signal replica (rep lica) according to the temporary determining bit to generate a reference signal from the modulated signal replica a means for synthesizing; and a reference signal generated by the aforementioned resynthesis means 200922159 related to the transmission system of the pre-receipt and the application (transmi - each of the received and the application or the second means of the reception, the use of the foregoing means The same transmission signal is subjected to the correlation receiving means output component via any one of the aforementioned receiving segments Interfering with the first _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In the case of the round path, the above-mentioned flute means and the aforementioned second correlation &&&&&&&&&&&&&&&&&&&&&&&&&&&&&& The invention is a transmission system of claim 1 wherein the transmitter has a plurality of transceivers having a plurality of receiving means, wherein each of the transmitting and transmitting signals is simultaneously transmitted by the transmitting antennas of the respective transmitting hands 9 ( The carrier wave is transmitted by the frequency, and the receiving antennas of the respective transmitting transmission paths are combined to reach the receiving antennas of the receiving means: means for connecting the transmission paths of the respective receiving antennas and the transmitting antennas of the plurality of transmitting hands, and the path receiving of each of the transmitting paths The receiver has an interference removal circuit that removes an output value included in the correlation received by the respective connections. The invention according to claim 7 is a transmitter having at least one transmission means for transmitting a transmission signal obtained by modulating a source signal by a transmission antenna, wherein each of the transmission means has a nonlinear modulation of the source signal to obtain the foregoing The modulation signal of the transmission signal, the foregoing transmission signal is converted into an IF signal in a receiver arriving via a transmission path, and the j F signal is sampled and generated with an actual sampling signal. The invention related to the eighth aspect of the patent application is a reception. The device has a receiving means for demodulating a received signal obtained via a receiving antenna, wherein the received signal is a signal transmitted to the receiver via a transmission path by a nonlinear modulation in the transmitter. And comprising: converting means for converting the received signal into an IF signal; and analog digital conversion means for sampling the IF signal and generating an actual sampled signal. The invention relating to the ninth application of the patent application is a transmission method, which is a transmission method in a transmission system including at least one transmission means for transmitting a transmission signal obtained by transmitting a transmission antenna. a transmitter; and a receiver having at least one receiving means for demodulating a received signal obtained via the receiving antenna, wherein: the modulation means of the transmitting means modulates the source signal envelope to obtain the transmitted signal a step of converting the received signal into an IF signal by the first converting means of the receiving means, a step of sampling the IF signal by the analog digital converting means of the receiving means and generating an actual sampling signal; and a second converting means of the receiving means a step of converting the actual sampled signal into a complex baseband signal; a step of differentiating the plurality of baseband signals by the different means of the receiving means and generating a differential complex baseband signal; and receiving, by the receiver, a differential complex number The step of the baseband signal. Further, an example of the fixed envelope modulation is FM (Frequency Modulation) modulation. [Effects of the Invention] According to the invention relating to the scope of the respective patent applications of the present invention, it is possible to realize the transmission of a signal which is nonlinearly modulated by a fixed envelope modulation (e.g., FM modulation, etc.). Therefore, the application of a non-linear amplifier is possible, and the power conversion efficiency can reach more than 90%. Only about 20% of the power conversion efficiency can be achieved in the linear amplifier. Therefore, efficient transmission of signals can be achieved. Moreover, as with the invention relating to the third item of the patent application, the application of a directly sampled 1-bit ADC is possible. This is important because of the availability of such low-quantity ADCs, and thus without the need for AGC circuits such as broadband wireless access. However, the more progress the broadband is, the narrower the communication area that a base station (b a s e station) can guard, and the result is that a huge base station must be set up. Great setup costs are required. Therefore, the cellular architecture (ceHuUr·architecture) in which the base stations are installed and the wired communication lines are not required to be installed in the base station is reviewed. These are called wireless fflesh networks. In such a wireless mesh network, the efficiency and capacity of the wireless trunk line connecting the base stations are very heavy. 2 In order to increase the efficiency and capacity of the wireless trunk line, it is very effective. In order to reduce the cost of the △, a... 绿 绿 继 继 继 基地 基地 基地 , , , , , , , , , , 基地 , , 基地 基地 基地 基地 基地 基地 基地 基地 基地According to the case, the second consumption is made; ^ is the possible consumption of An Zhen.胄月,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Summary block diagram. In the transmission system 1, the signal is transmitted by the transmitter 3 to the receiver 5 via the transmission path 7. The transmitter 3 is provided with a transmitting unit 9 (corresponding to the [transmission means] described in the patent range). The transmitting unit 9 includes a nonlinear modulation unit 11 that performs nonlinear modulation such as constant-mode modulation (for example, FM modulation), a source unit signal, an amplifier unit 13 that performs power conversion processing to generate a transmission signal, and a transmission unit 13; Antenna 15. The nonlinear modulation unit 11 performs a nonlinear modulation such as FM modulation. P 13 can be realized using a saturation amplifier that can achieve a power conversion efficiency or higher. The transmitted signal is transmitted by the transmitting antenna 15. The source signal can also be generated by a coded multiple signal. The receiver 5 includes a receiving unit 7 (corresponding to the [receiving hand] of the patent application scope) and a related receiving processing unit 1 receiving unit 17 having a receiving antenna 19 and an analog processing unit 2 1 and a digital processing unit 2 3 . The received signal obtained via the receiving antenna 19 is demodulated by the analog processing unit 21 and the digital processing unit 23 and the associated reception processing unit 18. The analog processing section 21 converts the received signal into an IF signal' to sample the IF signal and generate an actual sampled signal. In the present embodiment, the analog processing unit 21 is realized by using a 1-bit ADC (see the 1-bit ADC 47 of Fig. 5). The digital processing unit 23 converts the actual sampled signal into a complex fundamental frequency signal' to differentiate the complex fundamental frequency signal and produces a differential complex fundamental frequency, σ. The correlation receiving processing unit 18 receives the differential complex fundamental frequency by referring to the signal correlation. The transmission path is a multipath transmission path, and each path of the transmission path is correlatedly received, and the correlated received output signals are synthesized. 12 200922159 Next, the transmitter 3 of Fig. 1 will be specifically described with reference to Figs. 2 to 4 . FIG. 2 is a view showing a specific example of the transmitter 3 of FIG. 1. The nonlinear modulation section 11 has a pair of N source signals b. , tn.....a code-decoding multiple CDM (Code Devision Multiple) unit 31; a pulse shaping unit 33 for performing pulse shaping for band limitation; and performing FM modulation The FM modulation unit 35 of the variable processing. The amplifier unit 13 has an R F portion 37 including, for example, a transmission amplifier and a furnace waver (f i 11 e r). First, the operation of the CDM unit 31 of Fig. 2 will be described with reference to Fig. 3 . Fig. 3 is a view showing the time relationship of symbols which are simultaneously processed by the transmitter 3. One symbol is composed of Ncm chip codes (ch i p ) (one chip code in symbol k is represented by a chip code 39), and N symbols are multiplied after being diffused. Ncm (2 N) is equivalent to the diffusivity. Ci(t) is the diffusion series of the i-th spreading code, T c is the chip period (c h i p p e r i 〇 d), and b is the symbol period (symbol peri〇d) ONcm.Tc). At this time, the output of the CDM unit 31 of a certain information a k is expressed as (1). Si is an information symbol. Next, referring to FIG. 4, the operation of the pulse shaping unit 33 of FIG. 2 will be described. FIG. 4(a) shows the spectrum of the Qi(t) of the pulse (1) by the pulse shaping unit 33 of FIG. For an example, Figure 4 (匕) shows the #Ω after pulse shaping. (1) A diagram of the spectrum - an example. As can be seen from Figure 4, the buffer shaping limits the frequency band. The four payouts are described with respect to the operation of the FM modulation unit 35 of Fig. 2 . FM adjusts ^35疋 input Ω °(t), and outputs fFM(1) expressed by equation (2). This 200922159 is at ω. For the carrier frequency, kn is the modulation index. The RF unit 37 performs power conversion processing or the like on fFM(t), and the processed signal is transmitted by the transmitting antenna 15. [Formula 1] (1) (2) Λμ (0 = c〇s [iyc, + J 2 Ω. (7)] Next, the receiver 5 of Fig. 1 will be specifically described with reference to Figs. 5 to 8 . FIG. 5 is a view showing a specific example of the receiver 5 of FIG. 1. The analog processing unit 21 includes an RF unit 41 including an LNA (Low Noise Amplifier) and a filter, an MI X unit 43 that performs frequency selection to generate an IF signal, and a band pass filter ( BPF) 45; and 1-bit ADC 47. The digital processing unit 23 has a digital MIX unit 49, a low pass filter (LPF) 51, and a differentiating circuit 52. The correlation reception processing unit 18 is a configuration of a three-stage correlator, and includes delay elements 56 and 59, correlator banks 53, 55 and 58 and resynthesizers 54 and 57. In the correlation reception processing unit is, the correlator bank 53 uses the baseband signal Rt^t) generated by the LPF 51 as a reference signal, and receives the correlation R. (t) A signal generated by the differentiation circuit 52. The output of the correlator bank 53 is resynthesized by the resynthesizer 54. The correlator bank 55 receives the output signals of the 'signal Rr, 〇i(t) after the resynthesis processing by the resynthesizer 54 and the differential circuit '52 for delay processing by the delay element 56. The correlator bank 55 uses Rr, fll(t) as a reference signal, and receives the delayed signal by the delay element 56. Correlator 14 into. The signal buried in the correlator h? Correlator library later element 5 9 ϋ 200922159 The output of library 55 is recombined by resynthesizer 57 with the resynthesis by resynthesizer 57 and the delay processing by delay π 59 to Rm ( t) As a reference signal, the relevant received signal is delayed. The actions of each part are more specifically explained. The RF unit 41 has an LNA, a filter, etc., and -^ π^ % is removed by amplification or noise of the antenna 1 of the antenna 1. The crotch portion 43 performs a frequency ω by the RF unit 41. The frequency is converted to a lower frequency ω. The processed 1 BPF 45 increases the SN ratio ° to generate an IF signal by shifting the frequency of the MIX section 43 to the component near the residual frequency ω i of Μ i . The 1-bit 兀ADC47 outputs -1 or i to the IF signal of the LU.-LU^ king by the BPF 45. For example, if the amplitude of the signal input to the reference vibration - .nP/ (r7 is ^ 〇 ' is greater than 〇, the output i is output, otherwise the output of the digital portion 49 and the LPF 51 is re-transmitted to the signal of the carry Α κ The frequency conversion process converts the input signal into a nearby signal, that is, a fundamental frequency signal. The output baseband signal of the LPF 51 is represented by a signal RG(t) expressed by the equation (3). Here, 'A(t) is expressed The amplitude differentiating circuit 52 2 differentiates the fundamental frequency signal R〇(t) to generate a signal DQ(t) of (4) 5. Here, since FM modulation is used, A (t) is borrowed as in (5) The time-independent constant α is roughly given. Therefore, the signal (t) represented by the equation is given as in equation (6). The application of the 1-bit ADC causes a large quantization error (quanti2 library 58 〇 2 ( t ) 58 is: the IF rate of only the quasi-excitation bit 行 of the receiving number of the line is generated by 〇(乂)(4) L ti on 200922159 error). Therefore, the method is applicable to the linear Modulation mode demodulation circuit. 彳, 11 is planted in the amplitude and is transmitted by the wheel without transmitting the information to the amplitude ▲ 疋 'The present invention The FM modulation used by the village is contained in the box. If it does not damage the frequency, it is rare (or phase). Therefore, you can test the T-Bay machine; * Line sampling, even if it is private-* By taking a full sampling speed into the & 1 bit 兀 ADC, it is still possible to focus on the recovery of information energy on + #, -. The A tL·storm frequency signal in this case is based on sampling. This is also the IF signal of the frequency of the 进 进 参照 图 说明 说明 说明 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号 信号Se

2 ϋ a/# & Month, fine results from the transmission method of the invention using the 1-bit ADC. X ^ ^ ^ * L The result of the impulse response of the % path

(a) The result of changing the response to the 1-bit ADC response (b). The pulse of the transmission path of the barrier is specifically by a PN system; 5,) Ω . (t) ( ^ a- 11 2 ', · CPN (t) is given to the transmitter. 2), at the same time only by i 绐舳 绐舳 - + ', transmit antenna output, by the receiving antenna to perform the path detection specifically described below. The wheel ^ .. A J of the differentiating circuit 5 2 of FIG. 5 is passed through a filter 匹配 (hereinafter referred to as [matching wide wave ^ a E is]) matched to CPN(t). The impulse response of the matched filter is determined by hM(t)=CpN(Tii-t)A. The heart is occupied here, the asterisk * means the complex conjugate, and T« is the time offset. Fig. 6 is a view showing an example of the Yamashita π output impulse response of the matched filter μ, as described above, (a) showing the case where the 1-bit Anr u ^ DC is applied, and (b) showing the application of the high-density quantization ADC. (10-bit ADc) results of 悴p collapse. Moreover, (c) is the impulse response of the multipath transmission path given. The horizontal axis is the display time of 16 200922159. As shown in (a) of FIG. 6, it is found that even in the case where a 1-bit ADC is applied, two peaks corresponding to the multi-path transmission path shown in the same figure (c) appear. It is found that the difference between the results of (a) of Fig. 6 and the case of the high-density quantized ADC shown in the same figure (b) is small. Therefore, it is shown that the path detection can be performed correctly even if the i-bit ADC is applied. Since even if the bit ADC is applied as shown in Figure 6, the path separation may be such that cPN(t) is multiplied by the information bit and transmitted 'synthesized spikes that appear after passing through the matched filter, that is, if RAKE is performed. When receiving, the detection of the information bit becomes possible immediately. In the present embodiment, the present processing is performed by the correlator banks 53, 55 and 58 which are processed after the differentiating circuit 52. [Formula 2] (3) (4) (5) (6)

Ra(i) ^ A(t)eJlCm^a〇(T)dT

D〇^ = dtR〇^ * A\t)e3km^a〇Wdt +jA(t)kmQ〇(t)eikFM^Q〇iT)dT A(t) — (X » = 〇

D0 (t) = jcdmQ〇^eJkfMLa〇^dT, referring to FIG. 7 and @8 for the actions of the correlator banks 53, 55 and 58, FIG. 7 shows the correlator banks 53, 55 and 58 of FIG. An example of the composition. * M gg is treated as the reference signal Mt by the base frequency k number R 〇 (t) of the differential circuit yu' | > J, which is defined by the formula (3). The signal D 〇 (t ) delay unit 6 j is multiplied by p 〇 * Cfl ( t ) R (1 (t), where, cKt) is the third spread time offset T. The multiplier 63 is divided into 65 to perform integration processing. A diffuse series of scatter codes. Refer to Figure 8 for the 200922159 confrontation. , p. To illustrate. FIG. 8 is a diagram showing an example of a multipath transmission path. ρ 〇, p 1 , and p 2 represent time < 2, respectively. (2, the amplitude of each path in α 2 is a complex number. In the case of the multipath transmission path of Fig. 8, Td, Τ! and τ2 are for the symbol period TB, Tb > Td > α 2 > α Ο α. Td, such as T 〇 = Td - (2, Ti = Td - (2 1 , T2 = Td-Q: 2 is set. Similarly by the delay unit 67, multiplier 6 9 and The integrator 71 and the delay unit 73, the multiplier 75, the integrator 77, and the like obtain respective multipath components by so-called correlation reception, and finally are combined in phase in the adder 79 to generate an output be 〇. Processing, obtaining b. 1, ..., bc (n -1). The resynthesizer 54 re-synthesizes be, bei, ..., be (Nu. The resynthesizer 54 generates a signal Ω ^(t) by the equation (7) Here, det(bei) (i is a number from 0 to N-1) is a temporary decision bit, which is determined for each b%, b%, ..., bc (Nn judges -1 or 1) Next, the resynthesizer 54 generates a modulated signal replica Ω r by (8), where t i ( ) is a pulse equivalent to the pulse shaping section 33 of FIG. 2 . The shaping filter. Next, the resynthesizer 54 generates the signal RmU by the equation (9). The synthesizer 54 inputs the signal Rr, <n(t) to the correlator bank 55. The output signal of the differential circuit 52 is delayed (Td(>Tb)) by the delay element 56 and input to the correlation. The library 55. The correlator library 55 and the correlator bank 53 perform the signal delayed processing by the delay element 56 by using the signal Rr. (n(t) as the reference signal Rr(t). The same processing is explained in Fig. 7. The resynthesizer 57 inputs the output signal of the correlator bank 55 and the resynthesizer to the signal RnKt) to the phase 200922159 54 to generate the signal Rr, „2(t) 58 ° delay element 56 The output signal is delayed by the delay element 59 and input to the relevant test c. The upper library 58. The correlator library 58 and the library 53 and 55 are like the signal p, and h is Rr, °2(t) is used as a reference signal to perform the same processing as the description of the signal by delaying the delay element 5.9 and delaying the signal. [Formula 3] Nl Ω&quot ; (ο=Σ det(〇c, (〇i=0 ^〇(〇=F//(nrJ(〇)

Rr0l(t) = eJkFM^Qr〇Cr)dT Further, in the correlation receiving processing unit 8 of Fig. 5, interference removal power is applied to at least one of the outputs of the phases 53, 55 and 58. The interference removal circuit is a § § that generates interference that separates the interference contained in a certain signal. The interference removal circuit will be described later (refer to the description of the interference removal circuit I 63 in Fig. 10). In the case where the interference removal circuit is provided to the output 彳 § of the bank 5 5 or 5 8 , the generator 54 or 57 re-synthesizes the signal at the interference removal by the interference removal circuit (refer to FIG. Synthesizers 167, 173 and 176). [Embodiment 2] FIG. 9 is a schematic block diagram showing an example of the transmission system I 21 of the other embodiment of the present invention, with reference to FIG. 9 and FIG. In the transmission system I 21 off the library • a step and related Rr (t), • according to Figure 7 off the library road can also be (sub-channel specific correlator 'reasonable after the 164, . Description. Guan Chuanzhong The letter 200922159 is transmitted from the transmitter 123 having the transmitting units m and 131 to the receiver 125 having the receiving unit 133 135 via the transmission path m. The description of the configuration of the transmitting unit 129 and 131 for the transmitter m The same applies to the receiver 125 of Fig. 9. Fig. 1 is a view showing a specific example of the receiver i25 of Fig. 9. The unit 137 has a receiving unit 133 and 135. The reception processing unit 133 includes a reception antenna 141, an analog processing unit 142, and a digital processing unit 143. The digital processing unit 143 has a digit Μ χ胄 (4) and an LPF 145 and a differentiation circuit 146. The reception unit 135 has a reception antenna m and an analog processing unit i48. And the digital processing unit 149. The digital processing unit 149 has a vertical w portion m, an LPF 152, and a differentiating circuit 153. The receiving units 133 and 5 perform the same processing as that described for the receiving unit 17 of Fig. 5. The reception processing unit 137 performs the phase with FIG. 5: : Receiving processing unit: 8-type processing. However, the resynthesizers 164, 167 and the de-energizing unit 2: 再 are re-synthesized according to the output signal of the correlator bank and based on the round-out signal of the interference removing circuit. In the following, the operation of the correlation receiving processing unit 137 is specifically related to the second bank 61. The output signal of the LPF1 45 is used as a reference signal, and the signal is the output signal of the ' knife b channel 146 (refer to ® 7). Let the output LPF 152: out 2:, bWl). Moreover, the correlator bank 162 uses '13唬 as a reference signal, and the output signal of the relevant receiving differential circuit 丨5 3 20 200922159. Let the output signal be bei. , beii, ..., beuN-u. The settings of Ί\, p of the correlator banks 161 and 162, for example, in the case of the correlator bank 161, are connected to the transmitting antenna of the transmitting unit 1 29 of Fig. 9 and the receiving of Fig. 10 The transmission path of the antenna 141 is targeted. Further, in the case of the correlator bank 162, the transmission path connecting the transmission antenna of the transmission unit 133 of Fig. 9 and the reception antenna 148 of Fig. 10 is targeted. The interference removal circuit 163 generates separations that are generated by the correlator banks 161 and 162. Signals B〇, . . . , Bum of interference components (inter-symbol components, inter-symbol interference components, inter-antenna interference components, etc.) of each signal be.....beHN-", for example, in multipath When the delay spread is limited to one symbol period, it is also possible to use only the inter-symbol interference and the inter-antenna interference as the object of removal in the interference removal circuit 136. The multipath components in the 1 symbol period are synthesized by path clustering (p a t h d i v e r s i t y ) by the correlator library. In this case, the transmission path matrix in which the inter-code interference and the inter-antenna interference are described is set to Η, and be. . , ..., bei (X-1) has a vector of y3c and B. . The vector of Bi(ni) is B, then; Se = H./3, so the interference removal circuit is multiplied by /3 ε to satisfy B = H-1./3C = H_1.H.; 8=/S is implemented by the circuit of the matrix Η-1. Resynthesizer 164 is based on signal B. . Further, Bo(n-i) performs resynthesis processing (refer to equations (7) to (9)), and inputs the resynthesized signal to the correlator bank 165. Further, in the correlator bank 165, like the correlator bank 55 of Fig. 5, the output signal of the differentiating circuit 146 is delayed by the delay element 166 and input (Td (> Tb)). Moreover, the resynthesizer 167 is also the same, according to the signal B1. , ..., B1 ( h -1) perform resynthesis processing, and input the signal after the resynthesis processing 200922159 to the correlator bank 168. Further, the output of the correlator bank 55-like-differentiation circuit 146 of Fig. 5 is delayed and input to the delay element 166. The correlator library is the same as the correlator bank 55 of FIG. 5, and the related receiving stations 9 and 168 are subjected to correlation processing by the correlator bank 165 & 168 to remove the power signal by the interference removing circuit 170 and the interference. Was removed. After the processing of removing the Thunder 17n interference path 170 is performed by the interference, the resynthesis processing is performed by the resynthesis device 17... "The recombination processing is performed by the correlator banks m and 175. Moreover, the delay element 16 is rounded up to the processing. The signals are also delayed by the delay elements 173 and 17 respectively and input to the correlator bank 1 7 . The delay is flat 1 (2 and 175. The correlator bank n is sampled with the correlator bank 58 of FIG. Correlation receiving processing. 75 After the correlation processing is performed by the correlator banks 1 7 2 and 1 7 ς, Du  上 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 [3] Next, a description will be given of a practical embodiment of the present invention with reference to Fig. U. In the case where the modulation index kM is other 0-<<<" (2Tc)), In general, the mid-adjusted index portion can be roughly regarded as a constant. As a result, "for a low-key variable, the equation (6) is greatly simplified as in the (π) equation, and the d and the moon are linearly modulated by the CD Μ signal. Can be roughly regarded as [Equation 4] eJkm^Q〇WdT = β (10) (Π) D〇{t)^afikma〇{t) 22 200922159

Fig. 11 is a view showing the I ... low modulation index of the invention of the present invention; and 2: the modulation of the embodiment is a diagram of an example. The configuration of the transmitter in this embodiment is the same as that of the receiver 181 in the ^. The configuration is the same as the transmitter 123 187 of FIG. The receiver 181 has reception units 183 and 185 and a related reception processing unit. First, the reception unit 183 & .1 1Rq ^ will be described. The receiving unit 183 has a reception sky 1899, an analog processing unit 1 called 1 and a digital processing unit 1 93. The receiving antenna 1 89 and the analog processing unit 1 are the same operations as the receiving antenna 19 and the analog processing unit 21 of Fig. 1 . The old digital processing unit 193 has a digital MIX unit 201 and an LPF2 0 3 and a differential Raymond 9nc machine circuit 205. Digital MIX unit 201 and LPF 203

It is the same as the differential circuit 2 0 5 which is the same as the c ^ A J base and the digital MIX part 49 of the Fig. 5 and the LPF 51 and the differential circuit 52 recognize the cylinder. Further, the receiving unit 丨 8 5 also operates in the same manner as the receiving unit 186. The correlation receiving processing unit 1 8 7 s Μ Λ has associated profit pools 213 and 215 and interference removal circuit 217. As described above. In the case where kF« is a low-modulation index, D〇(t) can be roughly regarded as a linearly modulated CDM signal, so the correlator bank sets the reference signal to 1 (that is, 'for example, multiplication in Fig. 7 The unit 63 is multiplied by P/C. (1), etc., and generates a signal b%. ,...,~(a)). Moreover, the phase library 215 also generates a signal 一样 like the correlator bank 213. ,...,

The interference removal circuit 217 performs the same operation as the interference removal circuits 163, 170, and 177 of FIG. 1A, and generates signals including signals b%fl, ..., b, N components, inter-antenna interference components, and the like. Interference component of each signal (inter-symbol interference component, inter-symbol interference~interference 23 200922159] Brief Description of the Drawings Fig. 1 is a schematic block diagram showing an example of the present invention. Fig. 3 is a view showing a time chart of a specific example of Fig. 1: Fig. 3 is a diagram showing a time relationship of Fig. 1; Fig. 4 (a) is a display of Fig. 2 The spectrum of Kt) - for example, a picture of the spectrum of the whole U 〇 (t) pulsed by ""3. Figure 4 (b) shows the pulse shaping Figure 5 shows the diagram of Figure i Receiver: Fig. 6 is a diagram showing a specific example given by (c). The result of the impulse response given to the path by using the one-bit: two:: response is slightly transmitted. The situation before the detection of the shape of the 该L is also a " into, mouth j, the impulse response of the path In the case of the transmission mode detection of the invention, the pulse 2' and the detection are changed to 10 bits. FIG. 7 is a diagram showing the result (8) of the phase β of Fig. 5. The composition of the libraries 53, 55, 58 An example of Fig. 8 is a diagram showing an example in which the multipath transmission wheel 9 is a display unit. The i system of the present invention is an example of a thin η embodiment of the example of 2 1 . Fig. 9 is a view showing a specific example of the "receiving machine 125". The number k" is a diagram of an example of modulation of another embodiment of the low-prediction index. , the shape of the moon Μ Μ 0 transmission receiver 181

Diagram of ADC Input 24 200922159 Figure 12 is a schematic block diagram of a transmission system 301 for carrying out the transmission of the conventional MO I MO transmission technique and the signal using OFDM. [Description of main component symbols] 1 : Transmission system 3 : Transmitter 5 : Receiver 7 · Transmission path 9 : Transmission unit 1 1 : Nonlinear modulation unit 1 3 : Amplifier unit 1 5 : Transmitting antenna 1 7 : Receiving unit 1 8 : correlation reception processing unit 1 9 : reception antenna 2 1 : analog processing unit 2 3 : digital processing unit 31 : CDM unit 3 3 : pulse shaping unit 35 : FM modulation unit 37 - RF unit 3 9 : chip code 43: MIX Part 41: RF Part 25 200922159

4 3 : ΜI X Department 45: BPF

47: 1-bit ADC 49: Digital MIX section 51: LPF 5 2: Differentiating circuits 53, 55, 58: correlator banks 54, 57: resynthesizers 56, 59: delay elements 61, 67, 73: delay section 63 , 69, 75: multiplier 71 ' 77: integrator 7 9 : adder 1 2 1 : transmission system 1 2 3 : transmitter 1 2 5 : receiver 127 : ΜΙΜΟ transmission path 1 2 9 , 1 3 1 : transmission Unit 1 3 3, 1 3 5 : receiving unit 1 3 7 : correlation receiving processing unit 1 4 1 , 1 4 7 : receiving antennas 142 and 148 : analog processing unit 1 4 3 , 1 4 9 : digital processing unit 144, 151 : Digital MIX section 26 200922159 145 ' 152-.LPF 146, 153 : Differentiating circuits 161, 162, 165, 168, 172, 175: correlator banks 164, 167, 171, 174: resynthesizers 163, 170, 177: Interference removal circuit 1 8 1 : Receiver 183, 185: Reception unit 1 8 7 : Correlation reception processing unit 1 8 9 , 1 9 5 : Receive antenna 1 91, 1 9 7 : Analog processing unit 1 9 3, 1 9 9 : Digital Processing Department

2 0 1 , 2 0 7 : digit Μ I X part 203 ' 209: LPF 2 0 5, 2 11 : differential circuit 2 1 3, 2 1 5 : correlator bank 217: interference removal circuit 3 0 1 : transmission system 3 0 3: Transmitter 3 0 5 : Receiver 3 0 7 : ΜΙΜΟ transmission paths 309, 311, 313, 315: antennas 317, 321 : linear modulation unit 3 1 9 , 3 2 3 · linear amplifier unit 3 25, 32 9 : Multi-valued quantization AD unit 27 200922159 3 2 7 , 3 3 1 : Linear demodulation unit 333 : ΜΙΜΟ demodulation unit 28

Claims (1)

200922159 X. Patent application scope: 1. A transmission system comprising: a transmitter having at least one transmitting means for transmitting a transmission signal obtained by transmitting a source signal by a transmitting antenna; and having at least one transmitting body via a receiving antenna a receiver for receiving a signal demodulating receiving means, wherein the transmitting means has a modulation means for modulating the source signal envelope to obtain the transmission signal, the receiving means having: converting the received signal into an IF signal a conversion means; and an analog digital conversion means for sampling the IF signal and generating an actual sampled signal. 2. The transmission system of claim 1, wherein the source signal is generated by a code division multiple signal. 3. The transmission system of claim 1 or 2, wherein the analog-to-digital conversion means performs a 1-bit analog-to-digital conversion process that outputs different values based on the amplitude of the signal, and the amplitude of the signal is specified. When the value is equal to or greater than the predetermined value, or when the value is larger than the predetermined value and is equal to or smaller than the predetermined value, a different value is output. 4. The transmission system of claim 1 or 2, wherein the receiving means has: 'a second conversion hand-segment that converts the actual sampled signal into a complex fundamental frequency signal; and the complex baseband signal Deriving and generating a differential complex fundamental frequency signal. 29 200922159 Sub-means 1 The receiver has: receiving the differential complex fundamental frequency nickname by using the complex fundamental frequency signal as a reference signal, and determining the relevant received round-out value and generating a first correlation receiving means for temporarily determining a bit; a replica signal replica according to the temporary determining bit, a resynthesis means for generating a reference signal from the replica signal replica; and a reference generated by the resynthesis means The signal is associated with a second associated receiving means for receiving the differential complex baseband signal. 5. The transmission system of claim 4, wherein the transmission path when the transmission signal arrives at the receiver is a multi-channel transmission path, the first relevant reception year _ one in ^^ and δ hai A related receiving means is that each path of the transmission path enters the phase to receive the received signal after the synthesis-related reception. The transmission system of the item has a plurality of receiving and receiving in the receiving machine. For example, the first or second application of the patent scope has a plurality of transmitting means, and the connecting means transmits the sum of the segments by S The transmission signal generated by the segment is transmitted by using the same carrier frequency for each of the transmission developed antennas, and each of the receiving means performs correlation reception on the transmission antenna diameter of any one of the connected segments, and the transmission is performed at 30 1 The signal is synthesized via the transmission path and reaches each receiving and receiving antenna, and the transmission path of each receiving antenna and the plurality of transmitting hands is transmitted. The path of each of the transmission paths is removed from the round received by the receiving and receiving. The interference of the interference component of the value is removed, and the seven transmitters have at least one transmission means for transmitting the signal modulated by the transmission signal, wherein the transmission means has a modulation means for transmitting the source signal to the transmission signal,忒 The transmission signal is connected to the IF 彳5 via the transmission path. The IF signal is sampled and generated with the actual phase pickup 8 and a reception. The machine has at least one receiving means for demodulating via the received signal, wherein the received signal is a non-transmitted # in the transmitter, and the receiver arrives at the receiver via the transmission path, and includes: converting the received signal into an IF signal The IF signal is sampled and an actual sample conversion means is generated. 9. A transmission method comprising: a transmitter having at least one transmission means for transmitting a transmission signal to be transmitted by a transmission antenna; and a reception of demodulation of a reception signal obtained via a reception antenna, wherein: The modulation means of the transmitting means obtains the transmission signal from the source signal; and the first conversion means of the receiving means outputs the correlation path of the receiving means. The antenna transmission wheel is converted to a slogan in the receiver. The linear modulation obtained by receiving the antenna is 1 segment; and the source signal of the analog digital transmission wheel system is modulated to ν with a receiver of the hand, and the envelope is modulated: The step of converting the signal into a signal of ί F 200922159; the analog digital conversion means of the receiving means sampling the IF signal and generating an actual sampled signal; the second converting means of the receiving means converting the actual sampled signal into a complex fundamental frequency signal a step of: differentiating means of the receiving means to differentiate the complex baseband signal and generating a differential complex baseband signal; and correlating the receiving means of the receiver with the step of receiving the differential complex baseband signal. 32