Investigation on Feedback Channel State Information for Interference Rejection Combining Receiver in LTE-Advanced Downlink

2014 ◽  
Author(s):  
Yousuke Sano ◽  
Yusuke Ohwatari ◽  
Yuta Sagae ◽  
Akihito Morimoto ◽  
Yukihiko Okumura
Keyword(s):  
Channel State Information ◽  
Interference Rejection ◽  
Feedback Channel ◽  
Channel State ◽  
State Information ◽  
Lte Advanced

Multiplexing SRS with Periodic CSI on Shortened PUCCH Format 2/2a/2b

2014 ◽  
Vol 556-562 ◽  
pp. 6063-6067
Author(s):  
Dan Wang ◽  
Xue Mei Deng ◽  
Xin Ni
Keyword(s):  
Channel State Information ◽  
Reference Signal ◽  
Control Channel ◽  
Channel State ◽  
State Information ◽  
Similar Performance ◽  
Lte Advanced ◽  
Advanced System ◽  
Simultaneous Transmission

In order to avoid dropping the SRS report frequently in case of collision between SRS and a periodic CSI report in LTE-Advanced system, this paper gives shortened PUCCH (Physical Uplink Control Channel) format 2/2a/2b for multiplexing SRS (Sounding Reference Signal) with periodic CSI (Channel State Information). The result of simulation shows that the shortened PUCCH format 2/2a/2b can effectively support simultaneous transmission periodic CSI and SRS. What’s more, on shortened PUCCH format 2/2a/2b with the first and last two encoded bits punctured, periodic CSI and HARQ-ACK feedback have the same performance as on PUCCH format 2/2a/2b without multiplexing SRS. Hence through the shortened PUCCH format 2/2a/2b, we can not only enhance simultaneous transmission of periodic CSI and SRS, but also guarantee the similar performance of periodic CSI and HARQ-ACK feedback as transmitting them on PUCCH format 2/2a/2b without multiplexing SRS.

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