CN1846414A - TSM type radio communication method, radio communication system, radio reception device, and base station device - Google Patents
TSM type radio communication method, radio communication system, radio reception device, and base station device Download PDFInfo
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- CN1846414A CN1846414A CNA200480024949XA CN200480024949A CN1846414A CN 1846414 A CN1846414 A CN 1846414A CN A200480024949X A CNA200480024949X A CN A200480024949XA CN 200480024949 A CN200480024949 A CN 200480024949A CN 1846414 A CN1846414 A CN 1846414A
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- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
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- H—ELECTRICITY
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- H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
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Abstract
There are disclosed a TSM type radio communication method for enhancing the judgment accuracy of hard decision of the stealing-flag in a radio reception device for the stealing-flag contained in a signal modulated by the four-phase PSK transmitted from a base station device to the radio reception device, and a radio communication system used in this method. The device includes a hard decision unit (116). When it is judged that there is no hard decision value about the stealing-flag of the previous speech-frame, the hard decision unit (116) performs hard decision on the soft decision value about the stealing-flag of the current speech-frame with the four-phase PSK into one of the four candidates. On the other hand, when it is judged that there is a hard decision value about the stealing-flag of the previous speech-frame, the hard decision unit (116) performs hard decision on the soft decision value about the stealing-flag of the current speech-frame with the two-phase PSK into one of the two candidates.
Description
Technical field
The invention relates to TSM[TD-SCDMA (Time-division Synchronous CDMA, TD SDMA) System for Mobile Communication, the TD-SCDMA mobile communication system) wireless communications method of mode, and the employed wireless communication system of this method, radio receiver and base station apparatus.
Background technology
TD-SCDMA is the wireless mobile communications mode of China to ITU (International Telecommunication Union, Union of International Telecommunication) motion.There are two modes in TD-SCDMA, one is to use Chinese CCSA (China Communications Standards Association, China Association for Standardization) the TD-SCDMA air interface of the normalized form of Zhi Dinging and GSM (Global System forMobile Communications, the global system mobile communication) TSM mode [for example reference of network, " China Wireless Telecommunication Standard, Chinese radio telecommunication standard; 3G digitalCellular Telecommunications System, 3G digital cellular shape telecommunication system; Multiplexingand multiple access on the radio path (Release 3), the multiplexed and multiple access on the radio-ray path (discharging 3) "; CWTS TSM 05.02 V3.1.0,2002.12 (hereinafter referred to as non-patent literatures 1)]; Another is to use 3GPP (3rd Generation Partnership Project, third generation collaborative project) the network LCR of the air interface of the TD-SCDMA of the normalized form of Zhi Dinging and 3GPP (Low Chip Rate, low spreading rate) TDD (Time Division Duplex, time division duplex) mode.
In the TSM mode, in the Traffic Channel of circuit switching (CS:Circuit Switching) pattern (in TCH (traffic Channel)-T) communication, when base station apparatus etc. send emergency control information such as handover to radio receiver, FACCH[(Fast between given zone, TCH Associated, ControlCHannel)-and T: fast, the control channel-T relevant with TCH] steal TCH-T (following sometimes this being stolen is written as " Stealing ").
Fig. 1 represents the example of stealing of 2 speech frames of the TCH-T that passes through FACCH-T in the TSM mode.In the TSM mode, TCH-T/EFS (Enhanced full rate traffic channel for12.2kbit/s speech, the enhanced full rate Traffic Channel of 12.2kbit/s voice) and FACCH-T implement the piece diagonal angle together and interweave.Here, the piece diagonal angle interweave be half of the signal of 1 speech frame after the error correction coding be distributed in speech frame the 1st of n+ (be labeled as " speech frame #n+1 ", as follows.) even number (Even) position on, half the signal processing of signal allocation on odd number (Odd) position of speech frame #n+2 of residue.
Among Fig. 1, on speech frame #n, TCH-T is not stolen (hereinafter referred to as being called " No-Stealing ", " not stealing ") by FACCH-T; On speech frame #n+1, the even bit of TCH-T is stolen (hereinafter referred to as " Even-Stealing ", " even number is stolen ") by the even bit of FACCH-T; On speech frame #n+2, the odd bits of TCH-T is stolen (hereinafter referred to as " Odd-Stealing ", " odd number is stolen ") by the odd bits of FACCH-T.These are stolen when carrying out, and owing to the error correction coding processing that sends signal etc. changes along with stealing, so radio receiver must correctly be grasped the situation of stealing of carrying out, suitably change later error correction coding processing etc.
In addition, Fig. 2 represents in the TSM mode the stealing for example of 4 speech frames of the TCH-T by FACCH-T.Among Fig. 2, on speech frame #n, carry out even number and steal; On speech frame #n+1, the even bit of TCH-T and odd bits are stolen (to call " Full-Stealing " in the following text, " stealing entirely ") together by the even bit of FACCH-T and odd bits; On speech frame #n+2, steal entirely; Carrying out odd number on speech frame #n+3 steals.Picture as shown in Figure 2, the stealing of the TCH-T by FACCH-T crossed over a plurality of speech frames sometimes and carried out continuously.
Therefore, the wireless communications method of TSM mode, the state of stealing of 4 specific speech frames of existence.State separately under the circuit switched mode is that " 00 ", " 01 ", " 10 " reach " 11 " expression by 4 bit patterns of Fig. 3.In addition, steal state and put down in writing (referring to non-patent literature 1) with the data of stealing mark of the signal pulse series of TSM mode shown in Figure 4.
In addition, these 4 bit patterns are modulated with four phase PSK (QPSK, quaternary PSK) on base station apparatus, and picture shines upon as shown in Figure 5 on the IQ phase plane.Then, implement band spectrum modulation and scrambling etc. and handle the back transmission.Therefore, on the receiver side radio communication device, each speech frame of the signal that soft decision sends steal mark after, soft decision value is set in marginal 4 candidates shown in Figure 6 any one, according to hard decision, grasp the state of stealing of this speech frame again.
But, stealing mark also is not applicable to for example as W-CDMA-FDD, the such error correction of Reed-Muller-Coding (Reed-Miller code) of TFCI among the TDD 1.28McpsOption (choosing wantonly) (Transport Format Combination Indicator, transport format combination indicator).Therefore, the receiver side wireless terminal device can not correctly grasp steal mark danger than higher.And when stealing mark by wrong hard decision, can take place to steal the signal that mark sends with this and on the receiving terminal radio communication device, can not be correctly decoded, sound instantaneous trip or emergency control notification of information such as stop at problem.
Summary of the invention
The wireless communications method that the purpose of this invention is to provide the TSM mode, and the employed wireless communication system of this method, radio receiver and base station apparatus, for be included in from base station apparatus send to radio receiver with the mark of stealing the signal of four phase PSK modulation, improve the judgement precision of stealing the mark hard decision in the radio receiver.
According to one of mode of the present invention, the wireless communications method of TSM mode comprises: send the forwarding step with the signal of four phase PSK modulation; Receive the receiving step of the above-mentioned signal that sends; Received signal in the above-mentioned receiving step is carried out the demodulation step of demodulation; With mark carries out soft decision by each speech frame the soft decision step of stealing that is included in the above-mentioned received signal of demodulation; When thinking that the above-mentioned hard decision value of stealing mark of above-mentioned speech frame of relevant last time does not exist, with four phase PSK the soft decision value in relevant this above-mentioned soft decision step of above-mentioned speech frame being carried out hard decision is wherein the 1st hard decision step of any one in 4 candidates; When thinking that the above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame of relevant last time exists, according to above-mentioned hard decision value, with two-phase PSK the above-mentioned soft decision value in relevant this above-mentioned soft decision step of above-mentioned speech frame being carried out hard decision is wherein the 2nd hard decision step of any one in 2 candidates; And according to this above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame about above-mentioned the 1st hard decision step or above-mentioned the 2nd hard decision step, the decoding step that this above-mentioned received signal of above-mentioned speech frame is decoded.
According to alternate manner of the present invention, the wireless communication system of TSM mode comprises: base station apparatus possesses the transmitting element of transmission with the signal of four phase PSK modulation; And radio receiver, this radio receiver comprises: the receiving element that receives the above-mentioned signal that is sent out; Carry out the demodulating unit of demodulation to received signal; The above-mentioned received signal that will be included in demodulation in steal mark carries out soft decision by each speech frame soft decision unit; When thinking that the above-mentioned hard decision value of stealing mark of above-mentioned speech frame of relevant last time does not exist, with four phase PSK to relevant this above-mentioned speech frame above-mentioned steal the soft decision value of the above-mentioned soft decision unit of mark judging carry out hard decision be in 4 candidates wherein any one, perhaps when thinking that the above-mentioned above-mentioned hard decision value of stealing mark about the above-mentioned speech frame of last time exists, according to above-mentioned hard decision value, it is the wherein hard decision unit of any one in 2 candidates that the above-mentioned soft decision value of the above-mentioned soft decision unit of stealing mark about this above-mentioned speech frame above-mentioned being judged with two-phase PSK carries out hard decision; And according to relevant this above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame, the decoding unit that this above-mentioned received signal of above-mentioned speech frame is decoded.
According to other modes more of the present invention, the radio receiver of TSM mode comprises: the receiving element that receives the signal that uses four phase PSK modulation; The demodulating unit of demodulated received signal; The soft decision unit of stealing mark in the above-mentioned received signal that is included in demodulation of each speech frame of soft decision; Think when the above-mentioned hard decision value of stealing mark about the above-mentioned speech frame of last time does not exist, the soft decision value that uses four phase PSK that the above-mentioned soft decision unit of stealing mark about this above-mentioned speech frame above-mentioned is judged carry out hard decision be in 4 candidates wherein any one, perhaps think when the above-mentioned above-mentioned hard decision value of stealing mark about the above-mentioned speech frame of last time exists, according to above-mentioned hard decision value, using two-phase PSK that the above-mentioned soft decision value of judging about this above-mentioned above-mentioned soft decision unit of stealing mark of above-mentioned speech frame is carried out hard decision is the wherein hard decision unit of any one in 2 candidates; With according to the above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame about this, this decoding unit of above-mentioned received signal of above-mentioned speech frame of decoding.
According to alternate manner of the present invention, the base station apparatus of TSM mode comprises again: when the TSM mode was circuit switched mode, the bit pattern " 01 " of mark and the StF crosspoint of " 11 " were stolen in exchange; Exchanged the modulating unit of the signal of above-mentioned bit pattern with four phase PSK modulation; And the transmitting element that sends modulated above-mentioned signal.
Description of drawings
Fig. 1 be the TCH-T of expression by the FACCH-T in the TSM mode 2 speech frames steal illustration;
Fig. 2 be the TCH-T of expression by the FACCH-T in the TSM mode 4 speech frames steal illustration;
Fig. 3 is the figure of 4 bit patterns of the state of stealing in the specific speech frame of expression;
Fig. 4 is the structure chart of the traffic burst of expression TSM mode;
Fig. 5 is the employed IQ phase plane of the hard decision of the stealing mark figure of relevant each speech frame of expression;
Fig. 6 is the employed IQ phase plane of the hard decision of the stealing mark figure of relevant each speech frame of expression;
Fig. 7 is illustrated in the embodiments of the present invention 1, the figure that may shift of the state of stealing of relevant each speech frame;
Fig. 8 (A)～Fig. 8 (D) is the figure of IQ phase plane that expression is used for the hard decision of embodiments of the present invention 1;
Fig. 9 is the figure of structure of wireless communication system of the TSM mode of the relevant embodiments of the present invention 1 of expression;
Figure 10 is the 1st hard decision step of expression in the embodiments of the present invention 1 and the figure of the transfer of the 2nd hard decision step;
Figure 11 is the figure of structure of wireless communication system of the TSM mode of the relevant embodiments of the present invention 2 of expression;
The 12nd is in embodiments of the present invention 2, represents the figure of 4 bit patterns of the state of stealing in the specific speech frame;
Figure 13 is illustrated in the embodiments of the present invention 2, the figure that may shift of the state of stealing of relevant each speech frame; With
Figure 14 (A)～Figure 14 (D) is the figure of IQ phase plane that expression is used for the hard decision of embodiments of the present invention 2.
Embodiment
Below, the wireless communications methods of the TSM mode of relevant embodiments of the present invention etc. are illustrated with accompanying drawing.
(execution mode 1)
Fig. 7 is that 4 bit patterns " 00 ", " 01 ", " 10 " to the state of stealing of each speech frame of expression in the received signal reach " 11 ", the figure of possible transfer representing from the speech frame of last time to the process of this speech frame with arrow (1) to (8).When here, arrow (1) expression " not stealing " continues; Arrow (2) expression is when " not stealing " transfers to " even number is stolen "; Arrow (3) expression is when " even number is stolen " transfers to " stealing entirely "; Arrow (4) expression is when " even number is stolen " transfers to " odd number is stolen "; When arrow (5) expression " stealing entirely " continues; Arrow (6) expression is when " stealing entirely " transfers to " odd number is stolen "; Arrow (7) expression is when " odd number is stolen " transfers to " not stealing "; Arrow (8) expression is when " odd number is stolen " transfers to " even number is stolen ".
As shown in Figure 7, if the correct state of stealing of grasping the speech frame of last time, just always 2 of the candidates of the state of stealing in this speech frame.Therefore, in the present invention, when thinking that the hard decision value of stealing mark of speech frame of relevant last time does not exist, promptly can not correctly grasp when stealing state, with relevant this soft decision value of stealing mark of speech frame of four phase PSK hard decisions is wherein any one (the 1st hard decision step) in 4 candidates, on the other hand, when thinking that the hard decision value of stealing mark of speech frame of relevant last time exists, promptly can correctly grasp when stealing state, then promptly steal state according to this decision content, using this soft decision value of stealing mark of speech frame of two-phase PSK hard decision is wherein any one (the 2nd hard decision step) in 2 candidates.In addition, so-called " thinking when the hard decision value of stealing mark about the speech frame of last time does not exist ", just signal does not send to the situation of radio receiver at first from base station apparatus, also comprises owing to the variation of propagation path etc. and detects mistake can not be with receiving signal demodulation the time and in the received signal of error correction decoding described later and think the incorrect situation of the state of stealing of above-mentioned speech frame.In addition, so-called " thinking when the hard decision value of stealing mark about the speech frame of last time exists ", be meant the situation of removing above-mentioned " thinking when the hard decision value of stealing mark about the speech frame of last time does not exist ", with the existence of the reality of the hard decision value of stealing mark of relevant speech frame may not be consistent.
In Fig. 8, when being illustrated in the hard decision value of thinking about the speech frame of last time of stealing mark and existing, for according to this hard decision value be the state of stealing of above-mentioned speech frame use two-phase PSK hard decision about the soft decision value of stealing mark of this speech frame be in 2 candidates wherein any one, and the line of demarcation that is provided with and 2 candidates of this hard decision value are illustrated on the IQ phase plane.When Fig. 8 (A) is expression about the hard decision value of stealing mark of the speech frame of last time for " 00 "; When Fig. 8 (B) is expression about the hard decision value of stealing mark of the speech frame of last time for " 01 "; When Fig. 8 (C) is expression about the hard decision value of stealing mark of the speech frame of last time for " 10 "; And the situation of Fig. 8 (D) when being expression about the hard decision value of stealing mark of the speech frame of last time for " 11 ".
Relatively can learn with Fig. 6, be 1 line from Fig. 8 (A) to Fig. 8 (D) line of demarcation, and the permission field of 2 candidates of hard decision value has enlarged respectively.That is, during according to present embodiment, in the 2nd hard decision step, because the permission field of each candidate of the hard decision value on the IQ phase plane enlarged, so can improve its hard decision precision.
Fig. 9 represents to comprise the structure about the wireless communication system of the TSM mode of the radio receiver 110 of present embodiment and base station apparatus 150.Radio receiver 110 comprises, antenna element 111, duplexer 112, acceptance division 113, demodulation section 114, soft decision portion 115, hard decision portion 116, deinterleaver 117, error correction decoding portion 118, control part 119 and sending part 121.In addition, base station apparatus 150 comprises antenna element 151, duplexer 152, acceptance division 153, control part 154, error correction coding portion 155, interleaver 156, modulation portion 157 and sending part 158.
Duplexer 112 is at the time slot of the downgoing line that is distributed in radio receiver 110, the signal that antenna element 111 is caught is input to acceptance division 130, at the time slot of the uplink that is distributed in radio receiver 110, the signal from sending part 121 inputs is input to antenna element 111.
For the data portion of the above-mentioned received signal of importing from lsb decoder 114, deinterleaver 117 is implemented deinterleavings.Deinterleaver 117 is imported error correction decoding portion 118 to the received signal of deinterleaving by each speech frame then.
Error correction decoding portion 118 is according to the hard decision value of stealing mark of relevant each speech frame from 116 inputs of hard decision portion, data portion for the received signal of importing from deinterleaver 117 is judged its error correction decoding mode, implements error correction decoding according to the error correction decoding mode of judging for the data portion of above-mentioned received signal and handles.In addition, error correction decoding portion 118 for example is attached to the CRC (cyclic redundancy code) on this received signal in advance by judging, detects the still remaining mistake of data portion of implementing the received signal that error correction decoding handled.Error correction decoding portion 118 is input to control part 119 to the error detection result of each speech frame then.
121 pairs of sending parts from the signals of control part 119 inputs implement known transmissions such as modulation and amplification with signal processing after, the signal of these processing of enforcement is input to duplexer 112.
Error correction coding portion 155 generates and retransmits with signal or new transmission signal according to the decision of importing from control part 154, the signal that generates is implemented basis handled by the error correction coding of the mode of above-mentioned decision appointment.Then, error correction coding portion 155 is input to interleaver 156 to the signal of implementing the error correction coding processing with the mode of regulation.
156 pairs of signals from 155 inputs of error correction coding portion of interleaver are implemented the interleaving treatment according to the mode of the decision of importing from control part 154.Interleaver 156 is input to modulation portion 157 to the signal of implementing interleaving treatment then.
157 pairs of signals from interleaver 156 inputs of modulation portion are modulated with four phase PSK, and the signal of modulation is input to sending part 158.
158 pairs of sending parts are with the signals of four phase PSK modulation, implement to amplify and known transmissions such as D/A conversion with signal processing after, the signal of these processing of enforcement is input to duplexer 152.
With regard to the action of the hard decision portion 116 in the radio receiver of the TSM mode of relevant present embodiment, specifically be illustrated below.Figure 10 represents with arrow (11) to arrow (14), relevant each speech frame from 115 inputs of soft decision portion of hard decision steal the soft decision value of mark the time, (the 1st hard decision step) and the transfer of (the 2nd hard decision step) when being in 2 candidates any one when being in 4 candidates any one with two-phase PSK hard decision with four phase PSK hard decisions.Arrow (11) expression with the soft decision value of stealing mark of the relevant speech frame #n of four phase PSK hard decisions be in 4 candidates wherein any one, and the soft decision value of stealing mark of representing relevant speech frame #n+1 also to continue with four phase PSK hard decisions be the wherein situation of any one in 4 candidates.As the concrete form of arrow (11), the data portion that example is illustrated in the received signal after the error correction decoding of implementing relevant speech frame #n-1 and speech frame #n is handled detects amiss situation.In addition arrow (12) expression with the soft decision value of stealing mark of four phase PSK hard decision speech frame #n be in 4 candidates wherein any one, and expression is the wherein situation of any one in 2 candidates with the soft decision value of stealing mark of the relevant speech frame #n+1 of two-phase PSK hard decision.Concrete form as arrow (12), the hard decision value of stealing mark that example illustrates the relevant radio receiver 110 initial speech frame 1# that receive is free from mistakes, and the data portion of the received signal after the processing of the error correction decoding in the error correction decoding portion 118 of relevant speech frame 1# does not detect amiss situation yet.In addition, arrow (13) expression with the soft decision value of stealing mark of the relevant speech frame #n of two-phase PSK hard decision be in 2 candidates wherein any one, and the soft decision value of stealing mark of representing relevant speech frame #n+1 also to continue with two-phase PSK hard decision be the wherein situation of any one in 2 candidates.Concrete form as arrow (13), example illustrates the hard decision value physical presence of stealing mark of relevant speech frame #n-1 and speech frame #n, and does not detect amiss situation in the data portion of the received signal after the processing of the error correction decoding of relevant speech frame #n-1 and speech frame #n.In addition, arrow (14) expression with the soft decision value of stealing mark of the relevant speech frame #n of two-phase PSK hard decision be in 2 candidates wherein any one, and expression is the wherein situation of any one in 4 candidates with the soft decision value of stealing mark of the relevant speech frame #n+1 of four phase PSK hard decisions.As this form of tool of arrow (14), the data portion of the received signal after the enforcement error correction decoding that example illustrates speech frame #n is handled detects amiss situation for the first time.
Like this, wireless communications method and wireless communication system according to TSM mode in the present embodiment, when thinking that the hard decision value of stealing mark of speech frame of relevant last time exists, according to this hard decision value, with relevant this soft decision value of stealing mark of speech frame of two-phase PSK hard decision is in 2 candidates any one, can cross over the fact that a plurality of speech frames are stolen the reception transmission processing of mark continuously so can utilize, improve the hard decision precision of stealing mark.
In addition, wireless communications method and wireless communication system according to TSM mode in the present embodiment, when in the data division of the received signal that the error correction decoding of implementing relevant speech frame #n is handled, detecting mistake, think that the hard decision value of stealing mark of relevant speech frame #n does not exist, the soft decision value of stealing mark of relevant speech frame #n+1 is in 4 candidates any one with four phase PSK hard decisions as in the past.So can prevent relevant speech frame #n steal the hard decision value mistake of mark the time, for the mark of stealing of speech frame #n+1, hard decision is any one in wrong 2 candidates.
In addition, the radio receiver 110 of TSM mode in the present embodiment, when detecting mistake in the data portion to the received signal after error correction decoding portion 118 implements the error correction decoding processing, control part 119 notifies the situation of the hard decision value of stealing mark of the speech frame that allows its discarded related detection go out this mistake to be illustrated to hard decision portion 116, but the present invention does not limit this situation.For example, even in the data division of the received signal that error correction decoding portion 118 enforcement error correction decodings are handled, detect mistake, also can not make it send above-mentioned notice to hard decision portion 116.Like this, in the radio receiver 110 of TSM mode, can alleviate load for the desired signal processing of FEEDBACK CONTROL.
(execution mode 2)
Figure 11 is the block diagram of wireless communication system of the TSM mode of the relevant embodiments of the present invention 2 of expression.The wireless communication system of TSM mode comprises in the relevant present embodiment, the base station apparatus 550 of additional StF exchange portion 159 between interleaver 156 in base station apparatus 150 and the modulation portion 157 is with the base station apparatus 150 in the wireless communication system that replaces TSM mode in the relevant execution mode 1.So same function of each structural portion about the wireless communication system of TSM mode in most of structural portion performance of the wireless communication system of TSM mode in the present embodiment and the execution mode 1.Therefore, structure and action with regard to the wireless communication system of TSM mode in the relevant present embodiment describes below, but, give same reference marks and omit its explanation for the structural portion of each structural portion said function of the wireless communication system of TSM mode in performance and the execution mode 1.
The signal that is input to modulation portion 157 is after modulating with four phase PSK, to radio receiver 110 outputs.Implement 1st hard decision step or the 2nd hard decision step same at the soft decision value of stealing mark of radio receiver 110 each speech frame to received signal with execution mode 1.
But, in the present embodiment, because " 01 " and " 11 " quilt that is included in as described above in 4 bit patterns stealing mark in the received signal exchanged, so when representing may the shifting of the state of stealing of each speech frame, be the situation of Figure 13.
Therefore, in the present embodiment, in the 2nd hard decision step by hard decision portion 116, the bit pattern of the hard decision value of stealing mark in the speech frame of last time then makes it to use this soft decision value of stealing mark of speech frame of two-phase PSK hard decision to be in bit pattern " 00 " or " 11 " any one when " 00 "; The bit pattern of the hard decision of stealing mark in the speech frame of last time is when " 01 " in addition, and then making it with this soft decision value of stealing mark of speech frame of two-phase PSK hard decision is in bit pattern " 10 " or " 01 " any one; The bit pattern of the hard decision value of stealing mark in the speech frame of last time is when " 10 " in addition, and making it with this soft decision value of stealing mark of speech frame of two-phase PSK hard decision is in bit pattern " 00 " or " 11 " any one; The bit pattern that the hard decision value of stealing mark in the speech frame of last time arranged again is during for " 11 ", and then making it with this soft decision value of stealing mark of speech frame of two-phase PSK hard decision is in bit pattern " 10 " or " 01 " any one.
The 2nd hard decision step in the relevant present embodiment, on the IQ of Figure 14 phase plane, expression is when thinking that the hard decision value of stealing mark of speech frame of last time exists, for according to this hard decision value, it is the state of stealing of the speech frame of last time, with two-phase PSK is the soft decision value hard decision of stealing mark of this speech frame wherein any one line of demarcation that is provided with in 2 candidates, and 2 candidates of this hard decision value.
Comparison Figure 14 and Fig. 8 just can know and find out, according to present embodiment, except the effect of execution mode 1, each speech frame of the relevant received signal of hard decision steal the soft decision value of mark the time, because at the phase angle that can enlarge on the IQ phase plane between 2 candidates extracting this hard decision value, so can further improve this judgement precision.
In addition, in present embodiment, illustrated under the circuit switched mode of TSM mode, by the situation of " 01 " and " 11 " of StF exchange portion 159 exchange from 4 bit patterns stealing mark of the piece diagonal angle interleaved signal of interleaver 156 inputs of base station apparatus 550, but the exchange of this bit pattern also can realize by changing TSM mode standard itself (exchanging bit pattern " 01 " and " 11 ").That is to say the invention of present embodiment, same effect in the time of can obtaining and change TSM mode standard.
This specification is that its content all is contained in this as a reference according to the Japanese patent application 2003-307646 of application on August 29th, 2003.
Utilize possibility on the industry
The wireless communications method of TSM mode of the present invention has the mark of stealing that can improve relevant speech frame The effect of the hard decision precision of note, employed as wireless communications method and the method for TSM mode Wireless communication system, radio receiver and base station apparatus etc. all are useful.
Claims (8)
1, a kind of wireless communications method of TSM mode comprises:
Transmission is with the forwarding step of the signal of four phase PSK modulation;
The receiving step of the above-mentioned signal that reception is sent out;
Received signal in the above-mentioned receiving step is carried out the demodulation step of demodulation;
To mark carries out soft decision by each speech frame the soft decision step of stealing in the above-mentioned received signal that is included in demodulation;
When thinking that the above-mentioned hard decision value of stealing mark of above-mentioned speech frame of relevant last time does not exist, be any one the 1st hard decision step in 4 candidates with the soft decision value in relevant this above-mentioned soft decision step of above-mentioned speech frame of four phase PSK hard decisions;
When thinking that the above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame of relevant last time exists, according to above-mentioned hard decision value, be any one the 2nd hard decision step in 2 candidates with the above-mentioned soft decision value in relevant this above-mentioned soft decision step of above-mentioned speech frame of two-phase PSK hard decision; With
According to relevant this above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame in above-mentioned the 1st hard decision step or above-mentioned the 2nd hard decision step, the decoding step that this above-mentioned received signal of above-mentioned speech frame is decoded.
2, as the wireless communications method of the TSM mode of claim 1 record, wherein, when above-mentioned TSM mode is circuit switched mode,
In above-mentioned the 2nd hard decision step, the bit pattern of above-mentioned hard decision value that above-mentioned in the above-mentioned speech frame of relevant last time stolen mark is during for " 00 ", is in above-mentioned bit pattern " 00 " or " 01 " any one with relevant this above-mentioned above-mentioned soft decision value of stealing mark of above-mentioned speech frame of two-phase PSK hard decision;
The above-mentioned bit pattern of above-mentioned hard decision value that above-mentioned in the above-mentioned speech frame of relevant last time stolen mark is during for " 01 ", with the above-mentioned above-mentioned soft decision value of stealing mark of the above-mentioned speech frame of two-phase PSK hard decision relevant last time be in above-mentioned bit pattern " 10 " or " 11 " wherein any one;
The above-mentioned bit pattern of above-mentioned hard decision value that above-mentioned in the above-mentioned speech frame of relevant last time stolen mark is during for " 10 ", with relevant this above-mentioned above-mentioned soft decision value of stealing mark of above-mentioned speech frame of two-phase PSK hard decision be in above-mentioned bit pattern " 00 " or " 01 " wherein any one; With
The above-mentioned bit pattern of above-mentioned hard decision value that above-mentioned in the above-mentioned speech frame of relevant last time stolen mark is during for " 11 ", with relevant this above-mentioned above-mentioned soft decision value of stealing mark of above-mentioned speech frame of two-phase PSK hard decision be in above-mentioned bit pattern " 10 " or " 11 " wherein any one.
3, as the wireless communications method of the TSM mode of claim 1 record, also comprise:
For the above-mentioned received signal of decoding, carry out the error detection occurs step of error detection occurs by each above-mentioned speech frame,
Among above-mentioned error detection occurs step, when in the above-mentioned received signal of the above-mentioned speech frame of last time, detecting mistake, think that the above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame of relevant last time does not exist, by above-mentioned the 1st hard decision step, steal above-mentioned soft decision value in the above-mentioned soft decision step of mark with relevant this above-mentioned speech frame above-mentioned of four phase PSK hard decisions and be any one in 4 candidates.
4, as the wireless communications method of the TSM mode of claim 1 record, wherein, when above-mentioned TSM mode is circuit switched mode,
In above-mentioned forwarding step, above-mentioned above-mentioned bit pattern " 01 " and " 11 " of stealing mark are exchanged, and send the above-mentioned signal with four phase PSK modulation;
In above-mentioned the 2nd hard decision step, the above-mentioned bit pattern of above-mentioned hard decision value that above-mentioned in the above-mentioned speech frame of relevant last time stolen mark is during for " 00 ", with relevant this above-mentioned above-mentioned soft decision value of stealing mark of above-mentioned speech frame of two-phase PSK hard decision be in above-mentioned bit pattern " 00 " or " 11 " wherein any one;
The above-mentioned bit pattern of above-mentioned hard decision value that above-mentioned in the above-mentioned speech frame of relevant last time stolen mark is during for " 01 ", is in above-mentioned bit pattern " 10 " or " 01 " any one with relevant this above-mentioned above-mentioned soft decision value of stealing mark of above-mentioned speech frame of two-phase PSK hard decision;
The above-mentioned bit pattern of above-mentioned hard decision value that above-mentioned in the above-mentioned speech frame of relevant last time stolen mark is during for " 10 ", is in above-mentioned bit pattern " 00 " or " 11 " any one with relevant this above-mentioned above-mentioned soft decision value of stealing mark of above-mentioned speech frame of two-phase PSK hard decision; With
The above-mentioned bit pattern of above-mentioned hard decision value that above-mentioned in the above-mentioned speech frame of relevant last time stolen mark is during for " 11 ", is in above-mentioned bit pattern " 10 " or " 01 " any one with relevant this above-mentioned above-mentioned soft decision value of stealing mark of above-mentioned speech frame of two-phase PSK hard decision.
5, a kind of wireless communication system of TSM mode comprises:
Base station apparatus possesses the transmitting element that the signal with four phase PSK modulation is sent; With
Radio receiver, this radio receiver comprises:
The receiving element of the above-mentioned signal that reception is sent out;
Carry out the demodulating unit of demodulation to received signal;
With mark carries out soft decision by each speech frame the soft decision unit of stealing that is included in the above-mentioned received signal of demodulation;
Think when the above-mentioned hard decision value of stealing mark of above-mentioned speech frame of last time does not exist, the soft decision value of judging with relevant this above-mentioned above-mentioned soft decision unit of stealing mark of above-mentioned speech frame of four phase PSK hard decisions is any one in 4 candidates, and think when the above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame of relevant last time exists, according to above-mentioned hard decision value, the above-mentioned soft decision value of judging with relevant this above-mentioned above-mentioned soft decision unit of stealing mark of above-mentioned speech frame of two-phase PSK hard decision is any one the hard decision unit in 2 candidates; With
According to relevant this above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame, the decoding unit that this above-mentioned received signal of above-mentioned speech frame is decoded.
6, a kind of radio receiver of TSM mode comprises:
Reception is with the receiving element of the signal of four phase PSK modulation;
Carry out the demodulating unit of demodulation to received signal;
With mark carries out soft decision by each speech frame the soft decision unit of stealing that is included in the above-mentioned received signal of demodulation;
When thinking that the above-mentioned hard decision value of stealing mark of above-mentioned speech frame of relevant last time does not exist, the soft decision value of judging with relevant this above-mentioned above-mentioned soft decision unit of stealing mark of above-mentioned speech frame of four phase PSK hard decisions is any one in 4 candidates, and when thinking that the above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame of relevant last time exists, according to above-mentioned hard decision value, the above-mentioned soft decision value of judging with relevant this above-mentioned above-mentioned soft decision unit of stealing mark of above-mentioned speech frame of two-phase PSK hard decision is any one the hard decision unit in 2 candidates; With
According to relevant this above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame, the decoding unit that this above-mentioned received signal of above-mentioned speech frame is decoded.
7, as the radio receiver of the TSM mode of claim 6 record, comprising:
For the above-mentioned received signal of decoding, carry out the error detection occurs unit of error detection occurs by each described speech frame,
In above-mentioned error detection occurs unit, when in the above-mentioned speech frame of last time, detecting mistake, think that the above-mentioned above-mentioned hard decision value of stealing mark of above-mentioned speech frame of last time does not exist, by above-mentioned hard decision unit, the above-mentioned soft decision value of judging with relevant this above-mentioned above-mentioned soft decision unit of stealing mark of above-mentioned speech frame of four phase PSK hard decisions is any one in 4 candidates.
8, a kind of base station apparatus of TSM mode when above-mentioned TSM mode is circuit switched mode, comprising:
The bit pattern " 01 " of mark and the StF crosspoint of " 11 " are stolen in exchange;
With four phase PSK modulate that above-mentioned bit pattern exchanged the modulating unit of signal; With
Send the transmitting element of modulated above-mentioned signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP307646/2003 | 2003-08-29 | ||
| JP2003307646 | 2003-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1846414A true CN1846414A (en) | 2006-10-11 |
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ID=34269452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200480024949XA Withdrawn CN1846414A (en) | 2003-08-29 | 2004-08-26 | TSM type radio communication method, radio communication system, radio reception device, and base station device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2005022857A1 (en) |
| CN (1) | CN1846414A (en) |
| WO (1) | WO2005022857A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198147U (en) * | 1981-06-12 | 1982-12-16 | ||
| JPH088593B2 (en) * | 1984-04-17 | 1996-01-29 | 日本電気株式会社 | Demodulation circuit for digitally modulated wave |
| GB2260245B (en) * | 1991-10-04 | 1995-03-08 | Technophone Ltd | Digital radio receiver |
-
2004
- 2004-08-26 CN CNA200480024949XA patent/CN1846414A/en not_active Withdrawn
- 2004-08-26 WO PCT/JP2004/012665 patent/WO2005022857A1/en active Application Filing
- 2004-08-26 JP JP2005513526A patent/JPWO2005022857A1/en active Pending
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| Publication number | Publication date |
|---|---|
| WO2005022857A1 (en) | 2005-03-10 |
| JPWO2005022857A1 (en) | 2006-11-02 |
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