CN1278505C - Method for realizing function of closed loop emitting diversity in dedicated channel - Google Patents

Abstract

The present invention relates to a method for realizing the closed loop transmission diversity function of a special channel. For reducing computational complexity, weighting factors of an antenna and an antenna 2 are decomposed into three parts: phase complex multiplication coefficients C whose real parts and imaginary parts are all (+/-)1 or 0 under a mode 1 and a mode 2, power offset A_dB converted from a decimal A whose value range is between 2<-1/2> and 2<1/2>, and a right shift digit n for rightwards shifting n bits to obtained power amplitude values to denote the operation of multiplying 1/2<n>. Correspondingly, the complex coefficient weighting multiplication is also decomposed into three operation parts: a multiplexer, power quantization table deviation and displacement to realize phase regulation and power regulation. Finally, the weighting function of the closed loop diversity weighting factors to descending special channel data is realized. Consequently, the present invention greatly simplifies chip design, occupies few chip resources, and simultaneously better satisfies precision requirements.

Description

Realize the method for dedicated channel Closed-Loop Transmit Diversity function

Technical field

The present invention relates to realize in a kind of WCDMA/UMTS (WidebandCode Division Multiple Access/Universal Mobile Telecommunication System, i.e. Wideband Code Division Multiple Access (WCDMA)/universal mobile telecommunications system) base station that is used at moving communicating field the method for dedicated channel Closed-Loop Transmit Diversity function.

Background technology

The base station of mobile communication system uses two types transmit diversity to improve the performance of user data transmission, is respectively open loop diversity and closed loop diversity.When using Closed-Loop Transmit Diversity, two antenna emission user profile are used in the base station.The base station is according to user terminal (User Equipment, abbreviation UE) feedback adjusting antenna, the feedback bits of UE (Feedback Information is called for short FBI) transmission in up DPCCH (Dedicated Physical Control Channel, i.e. Dedicated Physical Control Channel).

Closed-Loop Transmit Diversity itself has two kinds of operator schemes, in pattern 1, the adjustment of the feedback command control phase of UE makes the power maximum of UE reception, thereby the phase invariant of base station maintenance antenna 1, adjusts the phase place of antenna 2 according to the moving average of two continuous feedback orders.Antenna 2 can adopt four kinds of different phase place settings under this pattern.

In pattern 2, except the phase place adjustment, also have the amplitude adjustment, but will use the feedback command of four bits, these four bits are positioned at four up DPCCH time slots, and one of them is amplitude adjustment order, and three is phase adjustment command.The amplitude combination different with two kinds of eight kinds of different phase places so just arranged, and signal of base station sends and has 16 kinds of combinations.

Wherein, the closed loop diversity DSCH (Downlink Shared Channel, i.e. DSCH Downlink Shared Channel) that only is applicable to dedicated channel and uses with dedicated channel.And then both having can be used for dedicated channel, open loop diversity can be used for common signal channel.

Closed loop diversity herein, Closed-Loop Transmit Diversity, dedicated channel Closed-Loop Transmit Diversity are same notions, and the notion of pattern 1 and pattern 2 is in above existing description.Wherein antenna 1 and antenna 2 can be called main antenna and diversity antenna in fact, and under the situation that does not have diversity (open loop or closed loop), data only send by antenna 1, do not have data on the antenna 2; Having under the situation of diversity, data also send from antenna 2 except sending from antenna 1.

In the descending modulation of WCDMA base station dedicated channel, need to realize the function of Closed-Loop Transmit Diversity.Described Closed-Loop Transmit Diversity function can be decomposed into weighted factor calculating, power/phase place adjustment and PILOT (pilot tone) pattern and distribute three big functions.Wherein:

(1) weighted factor calculating is corresponding up DPCH (the DedicatedPhysical Channel that sends here according to demodulated frames, it is DPCH, it is made up of DPCCH and DPDCH, wherein the full name of DPDCH is Dedicated Physical Data Channel, be Dedicated Physical Data Channel) FBI information, each time slot calculates the weighted factor of once current two antennas;

(2) power/phase place adjustment is to utilize the weighted factor that calculates, and each time slot is made plural multiplication to the DPCH channel on two antennas;

(3) distribution of PILOT pattern is meant that when closed-loop diversity mode 1 DPCH sends the pilot frequency design of quadrature on two antennas, and the pilot frequency design of DPCH on two antennas is identical when pattern 2.

The processing that wherein PILOT pattern distributes is fairly simple, but calculates weighted factor and work that the complex signal behind the spread spectrum is weighted more complicated then.This is that this has bigger difficulty when carrying out complex multiplication because the real part and the imaginary part of weighted factor are decimal under many circumstances.

The transmitter architecture of support DPCH closed loop mode transmit diversity as shown in Figure 1.Wherein, chnnel coding, interweave all identical with spreading part spreads with non-diversity mode.Complex signal behind the spread spectrum is delivered to two transmitting antennas, and by the specific weight factors w of antenna ₁And w ₂Weighting.Generally weighted factor is plural number, i.e. w _i=a _i+ jb _iWeighted factor (phase adjustment under the respectively corresponding the closed loop mode 1 and phase/amplitude adjustment amount under the closed loop mode 2) is by the UE decision, and utilizes the base station of D territory bit notice WCDMA of the FBI field of up DPCCH.

Which kind of pattern that closed loop transmit is decomposed in use pattern 1 or the pattern 2 is specified by high level.In pattern 1, after being averaged, the phase place that two time slots are received obtains weighted factor w ₂, and w ₁Be constant.In pattern 2, its phase information (FSM _Ph) FBI that received by three time slots obtains power information (FSM _Po) obtain by the FBI of a time slot, obtain the transmitting power of phase difference and antenna by FSM (Feedback Signalling Message promptly feeds back announcement information, is made of FBI), thereby calculate weighted factor w ₁, w ₂Two kinds of patterns all have some special circumstances, i.e. postamble adjustment, initialization and compact model.Be operation concrete under each situation below.

(1) postamble adjustment

At the afterbody of every frame, for pattern 1, when receiving the FBI of time slot 0, be not that the FBI with previous frame time slot 14 makes up, but with 13 combinations of previous frame time slot; For pattern 2, last FSM of every frame has only three FSM _PhThe position, and do not have FSM _PoThe position, the information of a FSM is still used in the power adjustment.

(2) initialization of closed loop diversity

Behind the up DPCH link setup (this moment descending DPCH link setup), UE begins to send FBI from Slot0, and the base station is only received in pattern 1 and the FBI of Slot0 under pattern 2 situations, do not harvested the FSM of three bits _PhThe time, carry out initialization by table 3 pair phase place, do not receive a bit FSM _PoThe time, use 0.5 transmitting power as antenna.

(3) the compact model convalescence of closed-loop diversity mode 2

If FSM just in time recovers to send at ascending time slot 0,4,8,12, then carry out initialization; If FSM sends at other time slot recoveries, then send FSM in the cycle at current incomplete FSM always _PhFirst bit, and two antenna powers are made as equal; When the new FSM cycle arrives, carry out initialization.

For pattern 1, have only phase information, therefore need 2bitFSM to be used to calculate weighted factor.Can ask for phase adjustment according to FSM by following table 1.

The relation of i time slot adjustment amount of table 1 feedback command FBI and up-link wireless frame

FSM ph	φ I
																0	1	2	3	4	5	6	7	8	9	10	11	12	13	14
	0	0	π/2	0	π/2	0	π/2	0	π/2	0	π/2	0	π/2	0	π/2																0
1																π	-π/ 2	π	-π/ 2	π	-π/ 2	π	-π/ 2	π	-π/ 2	π	-π/ 2	π	-π/ 2	π

Calculate the weighted factor of antenna 2 then by following formula (1).

$w_2=\frac{\underset{i=n-1}{\overset{n}{\mathrm{\&Sigma;}}}\cos \left({\mathrm{\&phi;}}_i\right)}{2}+j\frac{\underset{i=n-1}{\overset{n}{\mathrm{\&Sigma;}}}\sin \left({\mathrm{\&phi;}}_i\right)}{2}$

φ wherein _i∈ 0, π, pi/2 ,-pi/2)

The weighted factor of antenna 1 is a constant: $w_1=1/\sqrt{2}$

For pattern 2, by its FSM _Po, FSM _PhCalculate respectively two antennas transmitting power (power_ant1, power_ant2) and phase difference (phase_diff) (english abbreviation of phase difference).FSM _PoAs shown in table 2 with the corresponding relation of transmitting power, FSM _PhAnd the corresponding relation of phase difference is as shown in table 3 between antenna.

The FSM of table 2 closed loop mode 2 signaling messages _PoSon field

FSM po	The transmitting power of antenna 1	The transmitting power of antenna 2
			0	0.2	0.8
1	0.8	0.2

The FSM of table 3 closed loop mode 2 signaling messages _PhSon field

FSM ph	Phase difference between two antennas (°)
		000	180
001	-135
		011	-90
010	-45
		110	0
111	45
		101	90
100	135

After transmitting power that obtains antenna and phase difference, calculate weighted factor w by following formula (2) ₁And w ₂

$\underset{\&OverBar;}{w}=\left[\begin{array}{c}\sqrt{\mathrm{power}\_\mathrm{antl}}\\ \sqrt{\mathrm{power}\_\mathrm{ant}2}\exp (\mathrm{j\; phase}\_\mathrm{diff})\end{array}\right]$

(literary style of this formula is a kind of vector representation method, above a row expression w1, below row's expression w2.)

Common method for designing is according to the design accuracy requirement, and with the numerical value after the register-stored integer evolution, this numerical value comprises fractional part, indicates decimal digits with register in addition.Because the weighted factor that Closed-Loop Transmit Diversity calculates need carry out multiplying with the coded data behind the spread spectrum, the more complicated so such method for designing just seems when carrying out complex multiplication.Not only operand is big especially, and takies a large amount of resources.

Can see that from the computing formula of front closed loop diversity weighted factor the general type of the complex weighted factor is Aexp (j phase_diff), according to the value of phase difference, the weighted factor value may be A ,-A, Aj ,-Aj, 2 ^-1/2(1+j), 2 ^-1/2A (1-j), 2 ^-1/2A (1+j), 2 ^-1/2A (1-j).And the value of A is 0.5 ^1/2, 0.2 ^1/2With 0.8 ^1/2Directly the data behind these complex weighted factors and the spread spectrum are carried out multiplying, take a large amount of resources of chip, and implement the comparison difficulty.

Summary of the invention

The technical problem to be solved in the present invention is, at the above-mentioned defective of prior art, provides a kind of method that realizes dedicated channel Closed-Loop Transmit Diversity function, and is wherein, according to the weighted factor of feedback information calculating antenna 1 and antenna 2, further comprising the steps of:

(1) 2 times weighted factors with antenna 1 of pattern resolve into:

By span 2 ^-1/22 ^1/2Between the decimal A power offset A_dB that converts and to draw,

Be used for the gained power magnitude value n position that moves to right be multiply by 1/2 with expression ⁿThe figure place n that moves to right of computing,

The weighted factor of antenna 2 is resolved into:

By span 2 ^-1/22 ^1/2Between the decimal A power offset A_dB that converts and to draw,

Be used for the gained power magnitude value n position that moves to right be multiply by 1/2 with expression ⁿThe figure place n that moves to right of computing,

Real, imaginary part is respectively ± 1 or 0 the multiple multiplying factor C of phase place;

Perhaps,

1 time weighted factor with antenna 1 of pattern resolves into:

By span 2 ^-1/2-2 ^1/2Between the decimal A power offset A_dB that converts and to draw,

The weighted factor of antenna 2 is resolved into:

Be used for the gained power magnitude value n position that moves to right be multiply by 1/2 with expression ⁿThe figure place n that moves to right of computing,

Real, imaginary part is respectively ± 1 or 0 the multiple multiplying factor C of phase place;

(2), draw the result who carries out between framing data and the multiple multiplying factor C of described phase place behind the multiple multiplication, the adjustment of realization phase place by multi-selection device then to various may values coding of the multiple multiplying factor C of the phase place of pattern 2 or 1 time antenna 2 of pattern;

(3) in power control module, the concrete power dB value in each territory that calculates with power control module deducts the described power offset A_dB of closed loop diversity, and then look into the power quantization table and obtain corresponding power magnitude value, the described figure place n that moves to right according to closed loop diversity carries out shifting processing to described power magnitude value again, realization power is adjusted, and finally realizes the weighting effect of closed loop diversity weighted factor for the downlink dedicated channels data.

In (2) step of the method for the invention, with the multiple multiplying factor of phase place 8 kinds may value be encoded to 000,001,010,011,100,101,110 and 111 successively earlier, with framing data I+jQ and the multiple multiplying factor of described phase place 8 kinds may value carry out obtaining 8 kinds of results behind the multiple multiplication then, described 8 kinds of results' real part is imported successively first again and 8 selected 1 multi-selection device, imaginary part is imported second 8 successively and is selected 1 multi-selection device;

After this, when needs carry out the phase place adjustment, only the coding of the multiple multiplying factor of current phase place need be imported described first multi-selection device and second multi-selection device simultaneously, select corresponding real part and imaginary part and, can obtain the result after multiple multiplying factor of current phase place and framing data are carried out multiple multiplication both additions.

The present invention has adopted a kind of brand-new fixed point optimized Algorithm, as the key technology of Closed-Loop Transmit Diversity implementation, has well solved the problem that prior art exists.Wherein, weighted factor is resolved into phase place multiple multiplying factor, power offset and figure place totally three parts that move to right according to the characteristics of Closed-Loop Transmit Diversity weighted factor; Correspondingly, complex coefficient weighting multiplication also is broken down into multi-selection device, the skew of power quantization table and three part operations that are shifted, and realizes phase place adjustment and power adjustment, finally realizes the weighting effect of closed loop diversity weighted factor for the downlink dedicated channels data.Thereby greatly simplified chip design, when taking less resources of chip, also satisfied required precision preferably.Compared with prior art, method of the present invention has the following advantages:

(1) directly uses the result of calculation of the complex weighted factor in the prior art as Closed-Loop Transmit Diversity, not only hardware is realized complicated, it is more to take resource, but also the modulation power that has influence on the WCDMA downlink dedicated channels is controlled, the present invention is by being optimized decomposition to weighted factor, not only realize simply, and be convenient to carry out the power control of DPCH;

(2) because DSCH Downlink Shared Channel adopts the weighted factor of the Closed-Loop Transmit Diversity of the dedicated channel that accompanies, therefore utilize the algorithm of the complex weighted factor of Closed-Loop Transmit Diversity of downlink dedicated channels, simplify the realization of the Closed-Loop Transmit Diversity function of DSCH Downlink Shared Channel equally, be easy to realize the power control process of DSCH Downlink Shared Channel.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the schematic diagram of Closed-Loop Transmit Diversity function in the prior art;

Fig. 2 is that the phase place adjustment of antenna 2 among the present invention realizes schematic diagram.

Embodiment

The specific implementation method of Closed-Loop Transmit Diversity among the present invention once is described below:

The complex weighting factor of pattern 1 and pattern 2 can factorization be three parts:

(a) the multiple multiplying factor of phase place: reality, an imaginary part is respectively ± 1 or 0 plural C;

(b) power excursion: 2 ^-1/2-2 ^1/2Between decimal A;

(c) figure place that moves to right: 1/2 ⁿ

These 3 factors adopt different implementation methods respectively:

(1) real, imaginary part be respectively ± when 1 or 0 plural C writes in reply multiplication with the data behind the framing, consider the particularity of multiplier, can adopt the realization of adder and selector, as shown in Figure 2;

(2) for to avoid very wide multiplying, the implementation method that multiply by decimal A is as follows: with A be converted into power decibels A_dB (then-3.01dB≤A_dB≤3.01dB), before power control module is looked into the power quantization table, earlier power dB value is deducted side-play amount A_dB.The modulation of WCDMA down physical channel realizes that channel power adds temporary, will be according to channel power dB value, look into the power magnitude value that the power quantization table obtains channel, therefore the realization of above-mentioned decimal A just can be finished when this table lookup operation together, only takies extra resource seldom.And by extracting 1/2 ⁿMethod make A between 0.5-1, thereby improve operational precision.

(3) multiply by 1/2 ⁿMethod be the n position that moves to right on demand at last at power control module;

The weighted factor of pattern 1 decomposes fairly simple, the weighted factor w of antenna 1 ₁Be constant, obtain power offset-3.01dB after taking the logarithm, the weighted factor w of antenna 2 ₂Calculate by formula (1), four kinds of values are arranged, specifically adopt of the value decision of which kind of value by 2 bit FSM instruction.The weighted factor of antenna 2 can be decomposed into move to right figure place and the multiple multiplying factor two parts of phase place, the decomposition situation of the weighted factor of antenna 1 and antenna 2 is as shown in table 4 in the whole pattern 1, as can be seen from Table 4, the weighted factor of antenna 2 is nothing but (1+j)/2, (1-j)/2, (1+j)/2 ,-(1+j)/2, owing to just be equivalent to one of the data shift right of storing in the register divided by 2, so can be decomposed into move to right figure place and phase place plural number coefficient.

The decomposition of table 4 pattern 1 weighted factor

The FSM instruction		Antenna 1		Antenna 2
							Slot 2n	Slot 2n+1	Weighted factor	Power excursion	Weighted factor	Figure place moves to right	The multiple multiplying factor of phase place
0	0	0.5 1/2	-3.01dB	(1+j)/2	1	1+j
							0	1			(1-j)/2	1	1-j
1	0			(-1+j)/2	1	-1+j
							1	1			-(1+j)/2	1	-(1+j)

To the calculating of pattern 2 weighted factors will according to the FSM instruction table look-up 2 and table 3 obtain transmitting power and phase difference, decompose complicated, as shown in table 5.In the table 5 one of weight coefficient be exactly according to FSM instruction table look-up 2 and table 3, calculate the weighted factor of pattern 2 by formula 2.Wherein can be divided into 2 two kinds of situations of antenna 1 and antenna again.

The value of the weighted factor of antenna 1 is very simple, is 0.2,0.5 or 0.8 these three decimal evolutions.Wherein 0.8 ^1/2, 0.5 ^1/2Getting the 20log computing obtains-0.97dB (20 * log0.8 ^1/2=-.97) and 3.01dB (20 * log0.5 ^1/2=-3.01), and 0.2 ^1/2The operation values of directly taking the logarithm is less than normal, takes advantage of 2 to handle so do earlier, and the computing of taking the logarithm again obtains-and (20 * log (2 * 0.2 for 0.97dB ^1/2)=-0.97), correspondingly its figure place that moves to right is changed to 1, to guarantee to recover initial value.The weighted factor of antenna 2 also will multiply by phase adjustment except the decimal evolution, so finally can be decomposed into phase place multiple multiplying factor, the figure place that moves to right and power offset three parts.

The weighted factor of pattern 2 is by 3 bit FSM _PhWith 1 bit FSM _PoTotally 4 bit FSM command calculations obtain, and 1 need of pattern, 2 bit FSM instruction, these FSM instructions have also embodied in table 5 with antenna 1, antenna 2 each parameter corresponding relations.

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As can be seen from Table 5, under pattern 2 situations, the weighted factor w of antenna 1 ₁Can be decomposed into power offset and the figure place two parts that move to right, this two-part concrete value is relevant with the FSM instruction.The weighted factor w of antenna 2 ₁Can be decomposed into power offset, multiple multiplying factor three parts of the figure place that moves to right and phase place, their value is also by the value decision of FSM.

No matter be pattern 1 or pattern 2, after decomposing, the weighted factor of antenna 2 all can form reality, an imaginary part to be respectively ± 1 or 0 plural C, when data are carried out complex multiplication behind this plural number C and the framing, will change the phase place of framing data, therefore should can be described as the multiple multiplying factor of phase place by plural number C.Suppose that the framing data represent that with I+jQ wherein I represents real part, Q represents imaginary part, considers the various values of the multiple multiplying factor of phase place, so the multiple multiplying factor of framing data and phase place carry out result after the multiple multiplication have only 8 kinds may.For ease of realizing that the multiple multiplying factor of phase place is encoded to phase place selects signal, phase place selects signal since 0, up to 7, uses binary representation, concrete corresponding relation is as shown in table 6.

Multiple multiplying factor of table 6 phase place and selection signal correspondence table

The multiple multiplying factor of phase place	Multiple multiplication result	Phase place is selected signal
			1	I+jQ	000
-1	-I-jQ	001
			j	-Q+jI	010
-j	Q-jI	011
			1-j	I+Q-j(I-Q)	100
-1+j	-(I+Q)+j(I-Q)	101
			1+j	(I-Q)+j(I+Q)	110
-1-j	-(I-Q)-j(I+Q)	111

According to the relation of table 6 phase place selection signal, can realize the phase-adjusting circuit of I road and Q circuit-switched data easily, as shown in Figure 2 with multiple multiplication result.As can be seen from the figure, output I circuit-switched data is respectively I after the phase place adjustment ,-I, and-Q, Q, I+Q ,-(I+Q), and Q-I, I-Q is corresponding to the real part of multiple multiplication result in the table 6; Output Q circuit-switched data is respectively Q after the phase place adjustment ,-Q, and I ,-I, Q-I, I-Q, I+Q ,-(I+Q), corresponding to the imaginary part of multiple multiplication result in the table 6.Owing to only have antenna 2 to have the multiple multiplying factor of phase place, so have only antenna 2 need carry out the operation that phase place is adjusted.

Among the present invention, the weighted factor of pattern 1 and pattern 2 all can form the boundary in 2 after decomposing ^-1/2～2 ^1/2Between decimal A, it is the numerical value A_dB of unit that this decimal A is converted into dB by the computing of taking the logarithm, and is called power offset, it and the power control module of figure place n acting in conjunction in downlink dedicated channels modulation that move to right.In the modulated process of downlink dedicated channels, after the coded data process physics framing, carry out spread spectrum by channel code, carry out multiple multiplication with scrambler then and obtain data after the scrambling, at last by the power of power control module output to scrambling after data modulate output.Therefore power control also is important function point in the downlink dedicated channels modulation, main inner loop power control, limited flash-up and the power equalization realized in power control module.The output of power control will directly act on the data after the dedicated channel scrambling.Therefore after power control module calculates the concrete power dB value in each territory of dedicated channel, it need be deducted the power offset A_dB of closed loop diversity, look into the power quantization table then and obtain corresponding power magnitude value, carry out shifting processing according to the figure place that moves to right of closed loop diversity to the power magnitude value this moment again, thereby realize the weighting effect of closed loop diversity weighted factor for the downlink dedicated channels data.

In sum, the present invention is resolved into the multiple multiplying factor C of phase place, power offset A_dB, and figure place n three parts that move to right according to the characteristics of Closed-Loop Transmit Diversity weighted factor with weighted factor; Correspondingly, complex coefficient weighting multiplication also is broken down into multi-selection device, the skew of power quantization table and three part operations that are shifted, thereby has greatly simplified chip design.This algorithm has also satisfied required precision preferably when taking less resources of chip.

Table 7 is used power quantization tables among the present invention, in the method for the invention, power 7 carries out by tabling look-up, comprising power address value (being front said power dB value) and corresponding with it power magnitude value, be to get the power magnitude value to do multiplying with the data that need to send and launch by antenna then when specifically using.The power magnitude value has just determined to send the energy of data, and as can be seen from Table 7, the power address value is big more, and the power magnitude value is just more little, and vice versa.Do not exist under the situation of transmit diversity, have only antenna 1 to send data; And when having transmit diversity, antenna 1 and antenna 2 all send data, therefore require the power (referring to the power magnitude value here) of two antennas all to descend, so that same power when having only an antenna transmission is identical.The decline of power magnitude value just requires the increase of Power Groud location value, so in this sense, to add a side-play amount to the power address value, the A_dB that obtains because of previous calculations is a negative, so deduct the effect that this negative can reach " adding ", just reaching the power address value increases, the effect that the power magnitude value reduces.

Table 7 power quantization table

The power address value	The power magnitude value	The power address value	The power magnitude value	The power address value	The power magnitude value	The power address value	The power magnitude value
								1	7,607	46	2,083	91	570	136	156
2	7,392	47	2,024	92	554	137	152
								3	7,182	48	1,967	93	539	138	147
4	6,978	49	1,911	94	523	139	143
								5	6,780	50	1,857	95	508	140	139

6	6,588	51	1,804	96	494	141	135
								7	6,401	52	1,753	97	480	142	131
8	6,219	53	1,703	98	466	143	128
								9	6,043	54	1,655	99	453	144	124
10	5,871	55	1,608	100	440	145	121
								11	5,705	56	1,562	101	428	146	117
12	5,543	57	1,518	102	416	147	114
								13	5,386	58	1,475	103	404	148	111
14	5,233	59	1,433	104	392	149	107
								15	5,084	60	1,392	105	381	150	104
16	4,940	61	1,353	106	370	151	101
								17	4,800	62	1,314	107	360	152	99
18	4,664	63	1,277	108	350	153	96
								19	4,531	64	1,241	109	340	154	93
20	4,403	65	1,206	110	330	155	90
								21	4,278	66	1,171	111	321	156	88
22	4,157	67	1,138	112	312	157	85
								23	4,039	68	1,106	113	303	158	83
24	3,924	69	1,075	114	294	159	81
								25	3,813	70	1,044	115	286	160	78
26	3,705	71	1,014	116	278	161	76
								27	3,599	72	986	117	270	162	74
28	3,497	73	958	118	262	163	72
								29	3,398	74	931	119	255	164	70
30	3,302	75	904	120	248	165	68
								31	3,208	76	878	121	241	166	66
32	3,117	77	854	122	234	167	64
								33	3,029	78	829	123	227	168	62
34	2,943	79	806	124	221	169	60
								35	2,859	80	783	125	214	170	59
36	2,778	81	761	126	208	171	57
								37	2,699	82	739	127	202	172	55
38	2,623	83	718	128	197	173	54
								39	2,548	84	698	129	191	174	52
40	2,476	85	678	130	186	175	51
								41	2,406	86	659	131	180	176	49
42	2,337	87	640	132	175	177	48
								43	2,271	88	622	133	170	178
44	2,207	89	604	134	165	179
								45	2,144	90	587	135	161	180

Among the present invention, except the uplink special physical channel of specially pointing out, the dedicated channel of acquiescence all refer to downward special physical channel.So-called up be exactly UE to the base station, descending is exactly the past UE in base station.

Up DPCH divides DPDCH and DPCCH, and DPDCH transmits data data, DPCCH communicating control information.Wherein DPCCH has the FBI territory, and it is used for informing base station and adjusts phase place or amplitude.Each frame length of uplink special physical channel is 10ms, is divided into 15 time slots, and the length of each time slot is T _Slot=2560chips is corresponding to a power control period.

Descending DPCH is divided into DPDCH and DPCCH equally, and DPDCH transmits data data, DPCCH communicating control information.Wherein DPCCH has TPC, TFCI, three territories of Pilot.The frame of the long 10ms of each of downward special physical channel is divided into 15 time slots, and each time slot is long for Tslot=2560chips, corresponding to a power control period.

Claims (8)

1, a kind of method that realizes dedicated channel Closed-Loop Transmit Diversity function, wherein, the weighted factor according to 2 times antennas 1 of feedback information computation schema and antenna 2 is characterized in that, and is further comprising the steps of:

(1) weighted factor with antenna 1 resolves into:

By span 2 ^-1/2-2 ^1/2Between the decimal A power offset A_dB that converts and to draw, be used for the gained power magnitude value n position that moves to right be multiply by 1/2 with expression ⁿThe figure place n that moves to right of computing, resolve into the weighted factor of antenna 2:

By span 2 ^-1/2-2 ^1/2Between the decimal A power offset A_dB that converts and to draw, be used for the gained power magnitude value n position that moves to right be multiply by 1/2 with expression ⁿThe figure place n that moves to right of computing, real, imaginary part is respectively ± 1 or 0 the multiple multiplying factor C of phase place;

(2), draw the result who carries out between framing data and the multiple multiplying factor C of described phase place behind the multiple multiplication, the adjustment of realization phase place by multi-selection device then to various may values coding of the multiple multiplying factor C of the phase place of 2 times antennas 2 of pattern;

(3) in power control module, the concrete power dB value in each territory that calculates with power control module deducts the described power offset A_dB of closed loop diversity, and then look into the power quantization table and obtain corresponding power magnitude value, the described figure place n that moves to right according to closed loop diversity carries out shifting processing to described power magnitude value again, realization power is adjusted, and finally realizes the weighting effect of closed loop diversity weighted factor for the downlink dedicated channels data.

2, method according to claim 1 is characterized in that, in described (1) step, the value of described decimal A is 0.2 ^1/2, take the logarithm again after it be multiply by 2, and then multiply by 20, obtain power offset A_dB and be-0.97dB, cooperate the figure place 1 that moves to right simultaneously.

3, method according to claim 1 is characterized in that, in described (1) step, the value of described decimal A is 0.5 ^1/2Or 0.8 ^1/2, multiply by 20 again after it is taken the logarithm, obtain respectively power offset A_dB for-3.01dB and-0.97dB.

4, according to claim 1,2 or 3 described methods, it is characterized in that, in described (2) step,

With the multiple multiplying factor C of phase place 8 kinds may value be encoded to 000,001,010,011,100,101,110 and 111 successively earlier, with framing data I+jQ and the multiple multiplying factor C of described phase place 8 kinds may value carry out obtaining 8 kinds of results behind the multiple multiplication then, described 8 kinds of results' real part is imported successively first again and 8 selected 1 multi-selection device, imaginary part is imported second 8 successively and is selected 1 multi-selection device;

After this, when needs carry out the phase place adjustment, only the coding of the multiple multiplying factor C of current phase place need be imported described first multi-selection device and second multi-selection device simultaneously, select corresponding real part and imaginary part and, can obtain the result after multiple multiplying factor C of current phase place and framing data are carried out multiple multiplication both additions.

5, a kind of method that realizes dedicated channel Closed-Loop Transmit Diversity function, wherein, the weighted factor according to 1 time antenna 1 of feedback information computation schema and antenna 2 is characterized in that, and is further comprising the steps of:

(1) weighted factor with antenna 1 resolves into:

By span 2 ^-1/2-2 ^1/2Between the decimal A power offset A_dB that converts and to draw, the weighted factor of antenna 2 is resolved into:

Be used for the gained power magnitude value n position that moves to right be multiply by 1/2 with expression ⁿThe figure place n that moves to right of computing, real, imaginary part is respectively ± 1 or 0 the multiple multiplying factor C of phase place;

(2), draw the result who carries out between framing data and the multiple multiplying factor C of described phase place behind the multiple multiplication, the adjustment of realization phase place by multi-selection device then to various may values coding of the multiple multiplying factor C of the phase place of 1 time antenna 2 of pattern;

(3) in power control module, the concrete power dB value in each territory that calculates with power control module deducts the described power offset A_dB of closed loop diversity, and then look into the power quantization table and obtain corresponding power magnitude value, the described figure place n that moves to right according to closed loop diversity carries out shifting processing to described power magnitude value again, realization power is adjusted, and finally realizes the weighting effect of closed loop diversity weighted factor for the downlink dedicated channels data.

6, method according to claim 5 is characterized in that, in described (1) step, the value of described decimal A is 0.2 ^1/2, take the logarithm again after it be multiply by 2, and then multiply by 20, obtain power offset A_dB and be-0.97dB, cooperate the figure place 1 that moves to right simultaneously.

7, method according to claim 5 is characterized in that, in described (1) step, the value of described decimal A is 0.5 ^1/2Or 0.8 ^1/2, multiply by 20 again after it is taken the logarithm, obtain respectively power offset A_dB for-3.01dB and-0.97dB.

8, according to claim 5,6 or 7 described methods, it is characterized in that, in described (2) step,

With the multiple multiplying factor C of phase place 8 kinds may value be encoded to 000,001,010,011,100,101,110 and 111 successively earlier, with framing data I+jQ and the multiple multiplying factor C of described phase place 8 kinds may value carry out obtaining 8 kinds of results behind the multiple multiplication then, described 8 kinds of results' real part is imported successively first again and 8 selected 1 multi-selection device, imaginary part is imported second 8 successively and is selected 1 multi-selection device;

After this, when needs carry out the phase place adjustment, only the coding of the multiple multiplying factor C of current phase place need be imported described first multi-selection device and second multi-selection device simultaneously, select corresponding real part and imaginary part and, can obtain the result after multiple multiplying factor C of current phase place and framing data are carried out multiple multiplication both additions.

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