1_MC1 ._. 
Introduction_NN1 In_II 4C-HSDPA_NP1 ,_, one_MC1 of_IO the_AT open_JJ issues_NN2 to_TO be_VBI resolved_VVN is_VBZ the_AT design_NN1 of_IO the_AT HS-DPCCH_JJ codebook_NN1 for_IF the_AT case_NN1 when_CS 3_MC carriers_NN2 are_VBR configured_VVN without_IW MIMO_NN1 on_II any_DD of_IO the_AT carriers_NN2 ._. 
This_DD1 configuration_NN1 was_VBDZ considered_VVN by_II some_DD to_TO be_VBI a_AT1 more_RGR common_JJ scenario_NN1 and_CC one_PN1 which_DDQ warranted_VVD further_JJR optimization_NN1 ._. 
In_II this_DD1 contribution_NN1 ,_, we_PPIS2 show_VV0 link_VV0 level_JJ simulation_NN1 results_NN2 for_IF the_AT HS-DPCCH_JJ design_NN1 options_NN2 proposed_VVN for_IF the_AT case_NN1 when_CS the_AT UE_NP1 is_VBZ configured_VVN with_IW 3_MC carriers_NN2 without_IW MIMO_NN1 on_II any_DD of_IO them._NNU 2_MC ._. 
HS-DPCCH_JJ Design_NN1 Schemes_NN2 When_RRQ the_AT UE_NP1 is_VBZ configured_VVN with_IW 3_MC carriers_NN2 without_IW MIMO_NP1 ,_, ACK/NACK_NP1 and_CC CQI_JJ feedback_NN1 is_VBZ required_VVN for_IF carriers_NN2 C1_FO ,_, C2_FO and_CC C3_FO ._. 
There_EX are_VBR two_MC design_NN1 approaches_NN2 proposed_VVN for_IF this_DD1 case_NN1 ._. 
They_PPHS2 are_VBR detailed_VVN below_RL ._. 
It_PPH1 should_VM be_VBI noted_VVN that_CST both_DB2 the_AT design_NN1 approaches_NN2 are_VBR essentially_RR independent_JJ of_IO whether_CSW the_AT spreading_JJ factor_NN1 SF256_FO or_CC SF128_FO is_VBZ chosen_VVN for_IF this_DD1 configuration_NN1 ._. 
However_RR ,_, it_PPH1 is_VBZ desired_VVN that_CST a_AT1 consistent_JJ approach_NN1 to_II HS-DPCCH_JJ design_NN1 is_VBZ followed_VVN --_NN1 i.e._REX ,_, the_AT same_DA HS-DPCCH_JJ design_NN1 is_VBZ used_VVN when_CS the_AT three_MC carriers_NN2 are_VBR configured_VVN or_CC are_VBR active_JJ based_VVN on_II an_AT1 HS-SCCH_JJ order_NN1 based_VVN activation/deactivation_NN1 ._. 
In_II this_DD1 scheme_NN1 ,_, the_AT ACK/NACK_NN1 information_NN1 is_VBZ jointly_RR coded_VVN into_II a_AT1 single_JJ codebook_NN1 ._. 
The_AT codebook_NN1 used_VVN in_II this_DD1 simulation_NN1 corresponds_VVZ to_II Option_NN1 2_MC in_II &lsqb;_( 1_MC1 &rsqb;_) ._. 
The_AT codebook_NN1 contains_VVZ 24_MC code_NN1 words_NN2 and_CC is_VBZ backward_JJ compatible_JJ with_IW the_AT Rel-8_MC DC-HSDPA_JJ ACK/NACK_NN1 codebook_NN1 which_DDQ assures_VVZ a_AT1 measure_NN1 of_IO robustness_NN1 upon_II deactivation_NN1 ._. 
This_DD1 scheme_NN1 was_VBDZ simulated_VVN using_VVG a_AT1 single_JJ code_NN1 with_IW SF256_FO ._. 
The_AT CQI_JJ information_NN1 is_VBZ encoded_VVN using_VVG legacy_NN1 Rel-8_MC DC-HSDPA_JJ CQI_NN2 and_CC Rel-5_MC SC-HSDPA_JJ CQI_JJ codebooks_NN2 ._. 
The_AT CQI_JJ information_NN1 for_IF carriers_NN2 C1_FO and_CC C2_FO are_VBR jointly_RR encoded_VVN in_II the_AT Rel-8_MC DC-HSDPA_JJ codebook_NN1 and_CC is_VBZ transmitted_VVN in_II a_AT1 TDM_NP1 fashion_NN1 with_IW the_AT CQI_JJ information_NN1 corresponding_VVG to_II carrier_NN1 C3_FO which_DDQ is_VBZ encoded_VVN using_VVG the_AT Rel-5_MC SC-HSDPA_JJ codebook_NN1 ._. 
Figure_VV0 1_MC1 :_: Block_NN1 diagram_NN1 representation_NN1 of_IO a_AT1 single_JJ codebook_NN1 using_VVG 1xSF256_FO when_RRQ the_AT UE_NP1 is_VBZ configured_VVN with_IW 3_MC carriers_NN2 without_IW MIMO_NP1 NodeB_NP1 processing_NN1 for_IF Scheme_NN1 1_MC1 :_: The_AT NodeB_NP1 is_VBZ aware_JJ of_IO the_AT fact_NN1 that_CST the_AT HS-DPCCH_JJ channel_NN1 carries_VVZ feedback_NN1 information_NN1 pertaining_II21 to_II22 three_MC carriers_NN2 ._. 
DTX_NP1 detection_NN1 is_VBZ performed_VVN based_VVN on_II the_AT energy_NN1 over_II the_AT entire_JJ slot_NN1 HS-DPCCH_NN1 decoding_NN1 is_VBZ also_RR based_VVN on_II the_AT energy_NN1 over_II the_AT entire_JJ slot_NN1 ._. 
The_AT codebook_NN1 used_VVN contains_VVZ 24_MC code_NN1 words_NN2 and_CC corresponds_VVZ to_II Option_NN1 2_MC in_II &lsqb;_( 1_MC1 &rsqb;_) In_II this_DD1 scheme_NN1 ,_, legacy_NN1 codebooks_NN2 are_VBR re-used_VVN to_TO encode_VVI the_AT ACK/NACK_NN1 information_NN1 for_IF the_AT 3_MC carriers_NN2 ._. 
This_DD1 design_NN1 is_VBZ considered_VVN by_II some_DD to_TO be_VBI a_AT1 simple_JJ and_CC straightforward_JJ solution_NN1 &lsqb;_( 3_MC ,_, 4_MC &rsqb;_) ._. 
This_DD1 scheme_NN1 necessitates_VVZ the_AT use_NN1 of_IO SF128_FO in_BCL21 order_BCL22 to_TO transmit_VVI all_DB the_AT information_NN1 in_II a_AT1 single_JJ slot_NN1 ._. 
The_AT codebook_NN1 used_VMK to_TO encode_VVI the_AT carriers_NN2 is_VBZ the_AT Rel-8_MC DC-HSDPA_JJ codebook_NN1 ._. 
Carriers_NN2 C1_FO and_CC C2_FO are_VBR encoded_VVN in_II the_AT first_MD half_NN1 slot_NN1 and_CC carrier_NN1 C3_FO is_VBZ encoded_VVN into_II the_AT second_MD half_NN1 slot_NN1 ._. 
The_AT CQI_JJ information_NN1 is_VBZ encoded_VVN using_VVG legacy_NN1 Rel-5_MC SC-HSDPA_JJ CQI_JJ codebooks_NN2 and_CC is_VBZ transmitted_VVN in_II a_AT1 TDM_NP1 fashion_NN1 ._. 
This_DD1 CQI_JJ transmission_NN1 scheme_NN1 is_VBZ based_VVN on_II the_AT proposal_NN1 in_II &lsqb;_( 3_MC &rsqb;_) ._. 
Figure_NN1 2_MC illustrates_VVZ the_AT HS-DPCCH_JJ design_NN1 for_IF Scheme_NN1 2_MC ._. 
Figure_NN1 2_MC :_: Block_NN1 diagram_NN1 representation_NN1 of_IO the_AT usage_NN1 of_IO legacy_NN1 codebooks_NN2 on_II 1xSF128_FO when_RRQ the_AT UE_NP1 is_VBZ configured_VVN with_IW 3_MC carriers_NN2 without_IW MIMO_NP1 NodeB_NP1 processing_NN1 for_IF Scheme_NN1 2_MC :_: The_AT NodeB_NP1 is_VBZ aware_JJ of_IO the_AT fact_NN1 that_CST the_AT HS-DPCCH_JJ channel_NN1 carries_VVZ feedback_NN1 information_NN1 pertaining_II21 to_II22 only_RR three_MC carriers_NN2 ._. 
DTX_NP1 detection_NN1 is_VBZ performed_VVN based_VVN on_II the_AT energy_NN1 over_II the_AT entire_JJ slot_NN1 A_ZZ1 POST_NN1 codeword_NN1 is_VBZ used_VVN in_II31 place_II32 of_II33 a_AT1 half-slot_JJ DTX_NP1 when_CS less_DAR than_CSN three_MC carriers_NN2 are_VBR scheuled_VVN HS-DPCCH_JJ decoding_NN1 is_VBZ also_RR based_VVN on_II the_AT energy_NN1 over_II each_DD1 half_DB slot_NN1 ._. 
For_IF carriers_NN2 C1_FO and_CC C2_FO :_: The_AT codebook_NN1 is_VBZ the_AT Rel-8_MC DC-HSDPA_JJ codebook_NN1 which_DDQ contains_VVZ 8_MC code_NN1 words_NN2 ._. 
Therefore_RR ,_, the_AT NodeB_NP1 considers_VVZ a_AT1 total_NN1 of_IO 9_MC code_NN1 words_NN2 as_CSA possible_JJ hypotheses_NN2 (_( including_II the_AT POST_NN1 codeword_NN1 )_) ._. 
The_AT code_NN1 words_NN2 considered_VVN at_II the_AT NodeB_NP1 receiver_NN1 are_VBR :_: A_ZZ1 ,_, N_ZZ1 ,_, A+D_FO ,_, N+D_FO ,_, A+A_FO ,_, A+N_FO ,_, N+A_FO ,_, N+N_FO and_CC POST_NN1 For_IF carrier_NN1 C3_FO :_: The_AT codebook_NN1 is_VBZ the_AT Rel-8_MC DC-HSDPA_JJ codebook_NN1 which_DDQ contains_VVZ 8_MC code_NN1 words_NN2 ._. 
However_RR ,_, since_CS the_AT NodeB_NP1 is_VBZ aware_JJ that_CST feedback_NN1 information_NN1 for_IF a_AT1 single_JJ carrier_NN1 C3_FO is_VBZ to_TO be_VBI received_VVN ,_, the_AT codebook_NN1 can_VM be_VBI restricted_VVN to_II only_RR three_MC code_NN1 words_NN2 including_II POST_NN1 ._. 
The_AT code_NN1 words_NN2 considered_VVN at_II the_AT NodeB_NP1 receiver_NN1 are_VBR :_: A_ZZ1 ,_, N_ZZ1 and_CC POST_NN1 3_MC ._. 
HS-DPCCH_NP1 ACK/NACK_NP1 Simulation_NN1 Assumptions_NN2 3.1_MC Simulation_NN1 Metrics_NN2 False_RR Alarm_VV0 This_DD1 event_NN1 occurs_VVZ when_RRQ the_AT NodeB_NP1 falsely_RR detects_VVZ data_NN when_CS the_AT UE_NP1 transmits_VVZ only_JJ DTX_NP1 ._. 
For_IF all_DB the_AT results_NN2 shown_VVN in_II this_DD1 document_NN1 ,_, the_AT target_NN1 false_JJ alarm_NN1 probability_NN1 is_VBZ set_VVN to_TO be_VBI 10%_NNU Misdetection_NN1 This_DD1 event_NN1 occurs_VVZ when_RRQ the_AT NodeB_NP1 does_VDZ not_XX detect_VVI data_NN and_CC the_AT UE_NP1 transmits_VVZ data_NN ._. 
The_AT probability_NN1 of_IO misdetection_NN1 is_VBZ plotted_VVN in_RP for_IF all_DB the_AT schemes_NN2 and_CC scenarios_NN2 simulated_VVN in_II the_AT next_MD section_NN1 ._. 
Misdetection_NN1 or_CC Decoding_JJ error_NN1 This_DD1 event_NN1 occurs_VVZ when_RRQ one_MC1 of_IO the_AT following_JJ events_NN2 occur_VV0 The_AT NodeB_NP1 does_VDZ not_XX detect_VVI data_NN when_CS the_AT UE_NP1 transmits_VVZ data_NN ,_, OR_CC The_AT NodeB_NP1 correctly_RR detects_VVZ data_NN but_CCB decodes_VVZ it_PPH1 incorrectly_RR ._. 
The_AT probability_NN1 of_IO this_DD1 event_NN1 is_VBZ shown_VVN for_IF the_AT schemes_NN2 and_CC scenarios_NN2 simulated_VVN in_II the_AT next_MD section._NNU 4_MC ._. 
HS-DPCCH_NP1 ACK/NACK_NP1 Simulation_NN1 Results_NN2 In_II this_DD1 section_NN1 ,_, simulation_NN1 results_NN2 are_VBR shown_VVN for_IF Schemes_NN2 1_MC1 and_CC 2_MC described_VVN in_II Section_NN1 2_MC ._. 
The_AT simulation_NN1 assumptions_NN2 and_CC the_AT metrics_NN2 used_VVN are_VBR described_VVN in_II Section_NN1 3_MC ._. 
Figure_NN1 3_MC shows_VVZ the_AT probability_NN1 of_IO misdetection_NN1 and_CC the_AT probability_NN1 of_IO misdetection_NN1 or_CC decoding_JJ error_NN1 for_IF the_AT two_MC schemes_NN2 outlined_VVN in_II Section_NN1 2_MC .._... 
The_AT results_NN2 are_VBR shown_VVN for_IF the_AT AWGN_NN1 channel_NN1 for_IF a_AT1 target_NN1 False_JJ Alarm_NN1 Probability_NN1 =_FO 0.1_MC ._. 
Results_NN2 for_IF the_AT PA3_FO ,_, PB3_FO ,_, VA30_FO and_CC VA120_FO channels_NN2 can_VM be_VBI found_VVN in_II Figures_NN2 5-8_MCMC in_II the_AT Annex_NN1 ._. 
Figure_NN1 3_MC :_: Simulation_NN1 results_NN2 for_IF Schemes_NN2 1_MC1 and_CC 2_MC ;_; 3_MC Carriers_NN2 without_IW MIMO_NP1 ;_; AWGN_NP1 ;_; FAR_RR =_FO 10%_NNU Observation_NN1 The_AT following_JJ observations_NN2 can_VM be_VBI made_VVN from_II Figures_NN2 3_MC ,_, 5_MC --_JJ 8_MC :_: For_IF all_DB the_AT channels_NN2 simulated_VVD ,_, Scheme_NN1 1_MC1 :_: 1xSF256_FO with_IW a_AT1 single_JJ codebook_NN1 performs_VVZ better_JJR than_CSN Scheme_NN1 2_MC :_: 1xSF128_FO :_: Legacy_NN1 Codebooks_NN2 when_CS both_RR misdetection_NN1 and_CC decoding_JJ error_NN1 is_VBZ considered_VVN ._. 
When_CS a_AT1 target_NN1 of_IO 1%_NNU misdetection_NN1 or_CC decoding_JJ error_NN1 is_VBZ considered_VVN ,_, the_AT difference_NN1 in_II performance_NN1 ranges_VVZ from_II over_II 1dB_FO for_IF VA120_FO channel_NN1 to_II 2dB_FO for_IF the_AT PA3_FO channel_NN1 ._. 
The_AT data_NN points_NN2 simulated_VVN correspond_VV0 to_II the_AT HS-DPCCH_NP1 C/P_NP1 values_VVZ that_CST are_VBR permitted_VVN in_II the_AT specification_NN1 ._. 
Therefore_RR ,_, it_PPH1 is_VBZ clear_JJ that_CST even_CS21 if_CS22 the_AT quantized_JJ C/P_ZZ1 values_NN2 are_VBR considered_VVN ,_, Scheme_NN1 1_MC1 has_VHZ better_RRR transmit_VVI power_NN1 savings_NN2 ._. 
When_CS only_JJ misdetection_NN1 is_VBZ considered_VVN ,_, Scheme_NN1 2_MC performs_VVZ better_JJR than_CSN Scheme_NN1 1_MC1 ,_, but_CCB the_AT difference_NN1 in_II performance_NN1 is_VBZ not_XX significant_JJ 
